MR Imaging of Avascular Necrosis of the Femoral Head: Value of Small- Field-of-View Sagittal Surface-Coil Images
|
|
- Marshall Bates
- 6 years ago
- Views:
Transcription
1 1073 William P. Shuman1 Arthur A. Castagno1 2 Richard L. Baron1 Michael L. Richardson1 Received December 21, 1987; accepted after revision January 21, I Department of RadiOlOgy. SB-05, 1kiversity of Washington Hospital, Seattle, WA Address reprint requests to W. P. Shuman. 2 Present address: Radiology Associates, 3822 Colby Ave., Everett, WA AJR 150: , May X/88/ C American Roentgen Ray Society MR Imaging of Avascular Necrosis of the Femoral Head: Value of Small- Field-of-View Sagittal Surface-Coil Images We compared coronal, large-field-of-view, body-coil MR images with sagittal, smallfield-of-view, surface-coil images of 30 hips for their sensitivities in establishing the diagnosis of avascular necrosis; spatially localizing the avascular necrosis; and detecting joint-space narrowing, femoral head collapse, articular cartilage fracture, and joint fluid. We also compared the two separate plane/coil combinations for detection of the double-line sign (high signal inside a band of low signal, believed to be characteristic for avascular necrosis) and intertrochanteric conversion of hematopoletic marrow to fatty marrow. Coronal, large-field-of-view, body-coil images provided an adequate screening examination for the presence of avascular necrosis (sensitivity of 94%) and were preferred In all cases for mediolateral localization of focal abnormality. They were also better for assessing joint fluid and detecting fatty conversion of marrow. Sagittal, small-field-of-view, surface-coil images were preferred for anteropostenor localization in all cases and for superoinfenor localization of focal abnormality in 15 of 18 cases. They detected additional cases of joint-space narrowing, articular cartilage fracture, and the double-line sign missed by coronal, body-coil images. Sagittal, small-fleld-of-view, surface-coil images are a valuable adjunct to MR evaluation of femoral avascular necrosis because they provide additional information that may be useful for planning surgical therapy. Several studies have shown that MR is a sensitive technique for detecting the presence of avascular necrosis (AVN) in the femoral heads [1-4]. Most of these studies have used relatively low-resolution, large-field-of-view, coronal images produced with the imager body RE receiver coils. Beyond detecting the presence of AVN (sensitivity), MR may be able to provide additional information about the condition that is useful in planning surgical treatment. Such additional information might include improved specificity (to ensure that the imaged abnormality is indeed AVN), precise localization of foci of AVN within the femoral head, and some characterization of the degenerative changes associated with AVN. We prospectively evaluated the ability of small-field-of-view, sagittal, surface-coil images to produce information useful for surgical planning beyond that available on coronal, body-coil images. Subjects and Methods We compared coronal, body-coil and sagittal, surface-coil MR images from 30 hips in 15 patients with suspected AVN of the femoral heads. The patients were years old; six were men and nine were women. Fourteen patients had hip pain (1 1 unilateral, three bilateral). Thirteen patients had risk factors predisposing to AVN (prolonged steroid therapy in 11 patients, alcohol abuse in two patients). Plain-film radiographs were available in 25 hips in 13 patients. Seven patients had Tc-methylene diphosphonate bone scans that included the femoral heads. MR studies were performed on a 1.5-T clinical imager (General Electric, Milwaukee, WI) with 2.0- or 2.5-version software. In all hips, the imager body coil was used for RF reception for coronal images, and a butterfly-configuration, loop-gap surface coil (Medical Advances,
2 1074 SHUMAN ET AL. AJR:150, May 1988 Milwaukee, WI) was used for reception for sagittal images. The surface coil had two connected round resonators, each 1 1 cm in diameter, that could be positioned so that one resonator was on thc pelvic skin anterior to each femoral head (Fig. 1). This loop-gap surface coil was tuned and matched for each individual patient to optimize reception; tuning and matching required about 3 mm and was done in a preparation area adjacent to the magnet room just before the MR study. In all hips, coronal, body-coil images were Ti - weighted, /20, 25 (TR/TE) (requiring 8 mm to obtain), or spin-density-weighted, 2000/20; in 22 hips, they were T2-weighted, /60, 80 (requiring 1 7 mm to obtain). Coronal, body-coil slices were 5 mm thick (22 hips) or 1 0 mm thick (eight hips) with 1- or 2-mm interval between slices; all coronal images were Obtained with a 40- or 48-cm field of view, two repetitions, and a 256 x 256 matrix. Sagittal, surface-coil images were Ti-weighted or spin-density-weighted in all hips and T2-weighted in 20 hips. Sagittal, surfacecoil slices were all 5 mm thick with a 1 -mm interval between slices (Fig. 2); they were obtained with a 1 6- or 20-cm field of view, two repetitions, and a 256 x 256 matrix. On most of the sagittal, surfacecoil images, the direction of phase-encoding was superior to inferior on the image so that flow artifacts generated by the femoral artery did not extend across the femoral head. Two separate sagittal series were required, one through each femoral head; because the surface coil had dual resonators, these two series could be accomplished without moving either the patient or the coil. MR studies were reviewed independently by two of the authors who were unaware of all patient information such as clinical history, surgical results, plain-film findings, and results of radionuclide studies. Differences in MR findings arising from independent review were resolved by agreement when both authors subsequently reviewed the studies together. Both coronal, body-coil and sagittal, surfacecoil images were reviewed for the presence or absence of AVN as defined by focal nonanatomic low-signal areas in each hip [1, 4-7]. When present, AVN was further characterized as focal or diffusely mottled in appearance for each reception-coil/plane combination in each hip. Localization of AVN, when present, was qualitatively assessed by choosing (on the basis of the definition of the border between normal and abnormal tissue) the preferred reception coil/ plane combination for mediolateral localization, anteroposterior localization, and craniocaudad localization in each hip. Detection of various degenerative changes-joint-space narrowing, articular cartilage fracture, femoral head collapse, and significant (grades 2 and 3) joint effusion [8]-was noted for each reception-coil/plane combination; r --,,. qualitative preference for one coil/plane combination over the other for detection of these changes was also recorded for each hip. Detection of the double-line sign (high signal intensity inside a lowintensity rim on T2-weighted images [4, 9, 10]) and detection of the conversion of intertrochantenc hematopoietic (dark) marrow to fatty (bright) marrow [1 1] were noted for each reception-coil/plane combination; qualitative preference for one coil/plane combination over the other for detection of each of these signs was also recorded for each hip. MR findings were compared with surgical and clinical diagnoses. Surgery was performed in 12 hips; tissue sent for pathologic evaluation confirmed AVN in all 1 2. The remaining 1 8 hips were diagnosed clinically by using other imaging results, signs and symptoms, and follow-up of 6-i 8 months. In six of these 18 hips, a combination of positive symptoms, presence of a significant risk factor, characteristic radionuclide and/or plain-film findings (scierosis/lucency and trabecular coarsening), and characteristic MR findings, was considered positive for AVN. In all six of these hips, surgeons elected to observe rather than operate on the AVN because of the patient s general condition. Of the 18 hips with AVN, the condition was bilateral in three patients and unilateral in 12. The remaining 12 of the 18 hips evaluated clinically were diagnosed as negative for AVN because each had normal imaging studies and because each was asymptomatic during the follow-up period. Patients whose hips were in this latter group (negative for AVN) and who had not been seen for at least 6 months after the diagnosis (n = 5) were recontacted by phone to confirm continued absence of symptoms. Results Detection of AVN Large-field-of-view, Ti -weighted, coronal, body-coil images detected 1 7 of the 1 8 cases of AVN. Small-field-of-view, Ti - weighted, sagittal, surface-coil images detected all 1 8 cases of AVN. In the one additional case detected by sagittal, surface-coil images, a small anterior dark focus was missed on the coronal, body-coil images; this focus was biopsied with the guidance of the sagittal images and was histologically documented to be AVN. On coronal, body-coil MR images, I tfi#{228}:;.photo9ra,h of patient t (head to left) showing butterfly-contlguration loop-gap surface coil positioned on patient so one round resonator Is anterior to each femoral head. Small block of foam rubber (arrow) stabilizes coil.. I Fig. 2.-Localizer coronal MR Image indicates relative position of sagitr. tal surface-coil images.
3 AJR:150, May 1988 MR OF FEMORAL AVASCULAR NECROSIS i of the 1 7 hips positive for AVN showed a focal, low-signal pattern; four were more diffusely mottled (Fig. 3A). On sagittal, surface-coil MR images, i 6 of the 1 8 hips positive for AVN had a pattern of focal or linear low signal; two were mottled. In two hips that appeared diffusely mottled on body-coil, coronal images, a more discrete focal or linear dark abnormality was seen on the small-field-of-view, surface-coil images (Fig. 3B). Localization of AVN Fig. 3.-Bilateral avascular necrosis. A, Coronal body-cell large-field-of-view MR image, spin-density-weighted. Right femoral head has mottled pattern, whereas left femoral head has focal area of necrosis. Mediolateral localization of focal left abnormality Is well defined. B, Sagfttal, spin-density-weighted, surface-coil, small-field-of-view MR Image of rlghtfemoral head. AbnOrmalIty that was mottled on coronal image appears as serpiginous black lines. A = anterior P = posterior. C, S.gIttaI, spin-density-weighted, surface-coil, small-field-of-view MR Image of left femoral head. Linear dark abnormality surrounds brighter region anteriorly (arrow). Femoral and acetabular cartilage (arrowheads). A = anterior, P = posterior. D, Sagfttal, T2-weighted, surface-coil, small-field-of-view image of left femoral head. Focal bright area (arrow) Is spatially well localized in anteroposterlor and superoinferlor directions. A = anterior P = posterior. Fig. 4.-Focal left avascular necroala. A, Coronal, body-coil, large-field-ofview, TI-weighted MR Image. Focal dark region In left femoral head has reasonably well defined medlolateral localization. B, Saglttal, TI-weighted, surfacecoil, small-field-of-view MR image of left femoral head. Focal dark region Is well demarcated In anteroposterlorand superoinferlor planes. Surgeon s eye view. A = anterlor P = postedor PS = psoas muscle. The coronal plane was qualitatively preferred over the sagittal for mediolateral localization of the AVN process in i 7 of the 1 8 cases (Figs. 3A and 4A). Despite the lower resolution in the large-field-of-view, coronal images, mediolateral localization was accomplished more easily by direct observation of coronal images than by inference from stacked, sequential, small-field-of-view sagittal images. However, the sagittal, small-field-of-view, surface-coil images were qualitatively preferred over the coronal images for anteroposterior localization of the AVN process in all i 8 cases, and they were preferred for superoinferior localization in i 5 of the 1 8 cases (Figs. 3C and 4B). The ability to locate AVN by direct observation (rather than by inference from stacked sequential images) accounted for this preference in the anteroposterior plane; the superior resolution of the small-field-of-view, surface-coil images accounted for the preference in the superoinferior plane. In the three cases in which the coronal plane was preferred for superoinferior localization, the abnormality had extended somewhat into the proximal femoral neck, and the extension was better appreciated on the coronal image. D
4 1076 SHUMAN ET AL. AJR:150, May 1988 Detection of Associated Findings Of the 18 hips with AVN, both plain films and MR detected joint-space narrowing in three hips and femoral head collapse in two hips. These findings were all detected by the sagittal, surface-coil images (Fig. 5B); two cases ofjoint-space narrowing were missed on the coronal body-coil images. Eemoral head articular cartilage fracture was detected by MR in three hips; in all three cases, it was seen only on small-field-of-view, sagittal surface-coil images (Figs. 5B and 6). The sagittal surface-coil images were qualitatively preferred in all hips for assessment of these degenerative findings, primarily because of the higher spatial resolution provided by the small-field-ofview, surface-coil technique. Grade 2 joint fluid (enough to surround the femoral neck) [8] was detected in five hips by the coronal, body-coil images (Fig. 5A) and in four hips by the sagittal, surface-coil images. Grade 3 joint fluid (distension of the capsule recesses) was detected in two hips by the coronal, body-coil images; this grade of joint fluid was difficult to detect on sagittal images. The coronal plane was qualitatively preferred for assessing joint fluid, primarily because of the ability to depict the joint capsule around both the femoral head and neck on a single slice. The double-line sign (low-signal band with high-signal inner border) was evaluated only on T2-weighted images [4, 9, 1 0]. Of the 1 8 hips with AVN, T2-weighted images were available from both the coronal body coil and sagittal surface coil in 1 6. The double-line sign was detected in 14 of the 16 hips with the sagittal, surface-coil images (Fig. 5C) but in only 1 0 hips with the coronal, body-coil images. In all 1 6 hips, the surface-coil images were qualitatively preferred for evaluation V1,lFI ( 1 Ik,..,, 1(.rH. 4 Fig. 5.-Bilateral avascular necrosis and right femoral head collapse. A, Coronal, body.coll, large-field-of-view, T2-welghted MR Image. Apparent marked right femoral head collapse. Grade 2 fluid around femoral neck (arrows). B, Sagfttal, spin-density-weighted, surface-coil small-field-of-view MR image of right femoral head. Some collapse Is apparent but is not as severe as ft seemed from coronal Image. Articular cartilage narrowing and fracture (arrow). A = anterior P = posterior. C, Saglttal, spin-density-weighted, surface-coil, small-field-of-view MR image of left femoral head. Note double-line sign. A = anterior P = posterior. D, Sagittal, spin-density-weighted, surface-coil, small-sold-of-view MR Image of left femoral head. Normal femoral and acetabular cartilage (arrowheads). Dark serpiginous linear abnormality has segment of double-line sign (arrow). A = anterior P = posterior. of the double-line sign because superior spatial resolution made this finding more conspicuous. Intertrochanteric conversion of hematopoietic (dark) marrow to fatty (bright) marrow on Ti -weighted images was detected by MR in 1 4 of the 30 hips (Fig. 7). In 1 0 of these i 4 hips, this finding was associated with the presence of AVN; in i 2 hips (six patients) it was bilateral. Coronal, bodycoil images detected this finding in all 1 4 hips; sagittal, surface-coil images detected this finding in only nine hips. The Fig. 6.-Advanced left avascular necrosis. Sag. thai, T2-weighted, surface-coil, small-field-of-view MR image of left femoral head. Focal femoral head collapse (arrow) and diffuse marked articular cartilage narrowing. A = anteder P = posterior.
5 AJR:150, May 1988 MR OF FEMORAL AVASCULAR NECROSIS 1077 Fig. 7.-Evaluation of lntrtrochanteric marrow (two different patients). A, Coronal, large-field-of-view, body-coil, TI-weighted MR image. Note darker hematopoletic intertrochanteric marrow (arrows). B, Coronal, large-field-of-view, body.coil, TI-weighted MR image. Bright fatty lntertrochanteric marrow (arrows) Is similar in Intensity to subcutaneous fat (F). coronal, body-coil images were qualitatively preferred in all cases for assessment of fatty marrow conversion because the intertrochanteric region could be assessed entirely and bilaterally on a single slice in this plane. Discussion Advanced AVN of the femoral head (Ficat stage 4) with extensive loss of articular cartilage, deep compression fractures, and destruction of the acetabulum presents little diagnostic problem; it is usually treated with total hip replacement [i 2]. Less severe AVN with more focal abnormality or with some flattening of the femoral head (Ficat stages 2 and 3) may be treated with transtrochanteric rotational osteotomy if the hip joint space is not narrowed (indicating preservation of cartilage) [1 3, i 4]. This procedure depends on identifying a structurally normal portion of the femoral head (and cartilage) and surgically rotating the femoral head to make a new weight-bearing surface of that normal portion. Treatment of less advanced AVN (Ficat stages 0 and 1) currently is controversial. Several authors have suggested that such early disease should have immediate pressure measurements within the femoral neck and/or head; elevated pressures should be treated with core decompression [1 2, 1 5-i 7]. It is important that the core go into focal areas of abnormality ( breach the sequestrum ), not only to provide decompression but also to provide an avenue for revascularization [1 8, i 9]. Not all authors agree with the efficacy of this approach [1 9, 20]; however, most agree that both earlier diagnosis and spatially precise coring improve the chances of success. Imaging techniques used in support of this overall surgical approach need to be sensitive and specific for the diagnosis of AVN. In addition, imaging needs to be able to locate an area of abnormality within the femoral head and to detect associated degenerative changes so that the appropriate surgical procedure can be selected. We postulated that small-field-of-view, sagittal images of the femoral head obtained with a surface coil might offer improved information about the localization of the AVN process, the MR appearance of the abnormality, and the severity of associated degenerative changes. Loop-gap-resonator, small-field-of-view, surface-coil technology is capable of producing high-spatial-resolution images in conjunction with highfield-strength MR imagers [21]. Arranging two of these resonators in a butterfly configuration can provide a shape that conforms to the anterior pelvic anatomy while centering one coil over each femoral head. We chose the sagittal imaging plane for these surface-coil images to be orthogonal to the coronal, body-coil images and to provide a surgeon s eye view as seen from the lateral aspect of the patient (Fig. 4B). We believed the sagittal images might be helpful in planning either the lateral approach to a core biopsy or a rotational osteotomy (because sagittal images depict the relationship between the weight-beann9 portions of the acetabular dome and the femoral head) [i, 6]. Time limitations restricted surface-coil imaging to one sagittal series through each femoral head while this study was ongoing; however, newer software now available is able to image both hips in the sagittal plane with a single series that skips over the large gap between the femoral heads. In this series, the coronal, body-coil images provided an adequate screen for the presence of AVN with a sensitivity of 94% (1 7 of i 8). In localizing the focal abnormalities of AVN, the sagittal, surface-coil images were qualitatively preferred over the coronal, body-coil images for two of the three axes (anteroposterior and superoinferior). These two axes are important when planning a core biopsy, because focal areas of AVN tend to be anterior and superior in the femoral head [12, 1 6, i 9]. These axes also are important when planning rotational osteotomy because they localize spatial relationships between such an abnormality in the femoral head, the weightbearing region of the femoral head, and the acetabular dome. In our series, the small-field-of-view, surface-coil images detected two cases of joint-space narrowing and three cases of articular cartilage fracture missed by body-coil images. The surface-coil, small-field-of-view images were preferred for evaluating such degenerative findings because of their higher spatial resolution. In particular, we believed assessment of articular cartilage thickness was easier on surface-coil images, as has been reported previously [22] (Figs. 3C and 5D). The double-line sign, consisting of a low-signal rim surround-
6 1078 SHUMAN ET AL. AJR:150, May 1988 ing a zone of high intensity on T2-weighted images (considered by some authors to be pathognomonic of AVN [4, 9, 1 0]) was detected more often with the small-field-of-view, surface-coil images than with the large-field-of-view, body-coil images. Superior resolution was the reason cited for preferring surface-coil images when looking for this sign. In addition, surface-coil images detected two femoral heads with a pattern offocal, discrete, dark patches that had appeared mottled on body-coil images; the mottled pattern is considered to be less specific for AVN [1, 2]. Evaluation of conversion of hematopoietic marrow to fatty marrow may also be related to specificity for the diagnosis of AVN, because such conversion correlates with increased intramedullary pressure and decreased intramedullary blood flow [1 1]. Coronal images detected this finding more often and were qualitatively preferred, because the large field of view imaged the entire intertrochanteric region bilaterally on a single slice in the coronal plane. Similarly, the volume of hip joint fluid (which may correlate with the severity of the AVN process [8]) was most easily assessed on the coronal images because all of the joint capsule region bilaterally could be imaged on a single slice. Our series did not propsectively compare MR with other imaging techniques and did not attempt to measure the therapeutic impact of MR findings. However, our series does suggest that coronal, large-field-of-view, body-coil images may provide an adequate screen for the presence of AVN and adequate information about joint fluid and intertrochanteric marrow. Our series also suggests that sagittal, surface-coil images are preferable for anteroposterior and superoinferior localization of a focal abnormality; they better characterize the status of hip-joint articular cartilage and the double-line sign within the femoral head. Whenever AVN is identified on screening coronal, body-coil images, we believe small-field-of-view, sagittal, surface-coil images of the femoral head can be a valuable and worthwhile adjunct to the MR examination because they provide additional information that may be useful in planning surgical therapy. REFERENCES 1. Bassett LW, Gold RH, Reicher M, Bennett LR, Tooke SM. Magnetic resonance imaging in the early diagnosis of ischemic necrosis of the femoral head. C!in Orthop 1987;214: Thkman D, Axel L, Kressel HY, et al. Magnetic resonance imaging of avascular necrosis of the femoral head. Ske!etal Radio! 1986;15: Mitchell MD, Kundel HL, Steinberg ME, Kressel HY, Alavi A, Axel L. Avascular necrosis of the hip: comparison of MR. CT, and scintigraphy. AiR 1986;147: Mitchell DG, Rao VM, Dalinka MK, et al. Femoral head avascular necrosis: correlation of MR imaging, radiographic staging, radionuclide imaging, and clinical findings. Radio!ogy 1987;162: Totty WG, Murphy WA, Ganz WI, Kumar B, Daum WJ, Siegel BA. Magnetic resonance imaging of the normal and ischemlc femoral head. AIR 1984;1 43: Gillespy T, Genant HK, Helms CA. Magnetic resonance imaging of osteonecrosis. Radio! C!in North Am 1986;24: Markisz JA, Knowles RJR, Altchek DW, Schneider R, Whalen JP, Cahill PT. Segmental patterns of avascular necrosis of the femoral heads: early detection with MR imaging. Radioiogy 1987;162: Mitchell DG, Rao V, Dalinka M, et al. MRI of joint fluid in the normal and ischemic hip. AIR 1986;146: Mitchell DG, Kressel HY, Arger PH, Dalinka M, Spritzer CE, Steinberg ME. Avascular necrosis of the femoral head: morphologic assessment by MR imaging with CT correlation. Radio!ogy 1986;161 : Mitchell DG, Kressel HY, Ra0VM, etal. Theunique MR appearanceof the reactive interface in avascular necrosis: the double line sign. Magn Reson imaging 1987;5[suppl. 1j: Mitchell DG, Rao VM, Dalinka M, et al. Hematopoietic and fatty bone marrow distribution in the normal and ischemic hip: new observations with 1.5-T MR imaging. Radio!ogy 1986;161 : Ficat RP. Treatment of avascular necrosis of the femoral head. In: Hungerford DS, ad. The hip. St. Louis: Mosby, 1983: Sugioka Y, Katsuki I, Hotokebuchi T. Transtrochantenc rotational osteotomy of the femoral head for the treatment of ostoonecrosis. C!in Orthop 1982;169: Sugioka V. Transtrochantenc rotational osteotomy in the treatment of idiopathic and steroid induced femoral head necrosis, Perthes disease, slipped capital femoral epiphysis, and osteoarthritis of the hip. C!in Orthop 1984;184: Solomon L. Idiopathic necrosis of the femoral head: pathogenesis and treatment. Can J Surg 1981;24: Hungerford DS, ZizicTM. Pathogenesis ofischemic necrosis of the femoral head. In: Hungertord DS, ad. The hip. St. Louis: Mosby, 1983: Hungerford DS, Lennox DW. The importance of increased intraosseous pressure in the development of osteonecrosis of the femoral head: mphcations for treatment. Orthop C!in North Am 1985;16: I 8. Wang GJ, Dughman 55, Roger SI, Stamp WG. The effect of core docompression on femoral head blood flow in steroid induced avascular necrosis of the femoral head. J Bone Joint Surg (Am) 1985;67-A: Camp JF, Colwell CW. Core decompression of the femoral head for osteonecrosis. J Bone Joint Surg (AmJ 1986;68-A: Petty W. EditOrial. Osteonecrosis. J Bone Joint Surg (Am) 1986;68-A: Kneeland JB, Jesmanowicz A, Fronasz W, Grist TM, Hyde JS. High resolution MR imaging using loop-gap resonators. Radio!ogy 1986;158: U KC, Huggs J, frjsen AM, Buckwafter KA, MaTtel W, McCune WJ. MRI in the normal and osteoarthritic hip: a sensitive moans of detecting early articular cartilage changes. Presented at the annual meeting of the society of Magnetic Resonance in Medicine, New York, NY, August 1987
Magnetic resonance imaging of femoral head development in roentgenographically normal patients
Skeletal Radiol (1985) 14:159-163 Skeletal Radiology Magnetic resonance imaging of femoral head development in roentgenographically normal patients Peter J. Littrup, M.D. 1, Alex M. Aisen, M.D. 2, Ethan
More informationFAI syndrome with or without labral tear.
Case This 16-year-old female, soccer athlete was treated for pain in the right groin previously. Now has acute onset of pain in the left hip. The pain was in the groin that was worse with activities. Diagnosis
More informationMedial circumflex artery Lateral circumflex artery
Femoral Head Fractures: A Critical But Frequently Missed Injury Susanna C. Spence MD Manickam Kumaravel MBBS University of Texas Health Science Center at Houston Background Femoral head fractures: A complication
More informationOsteonecrosis - Spectrum of imaging findings
Osteonecrosis - Spectrum of imaging findings Poster No.: C-1861 Congress: ECR 2016 Type: Educational Exhibit Authors: P. Ninitas, A. L. Amado Costa, A. Duarte, I. Távora ; Lisbon/ 1 1 2 1 1 2 PT, Costa
More informationdgemric Effectively Predicts Cartilage Damage Associated with Femoroacetabular Impingement
Riccardo Lattanzi 1,2 Catherine Petchprapa 2 Daniele Ascani 1 Roy I. Davidovitch 3 Thomas Youm 3 Robert J. Meislin 3 Michael. Recht 2 1 The Bernard and Irene Schwartz Center for Biomedical Imaging, New
More informationThe rate of success of transtrochanteric rotational
Trochanteric rotational osteotomy for osteonecrosis of the femoral head THE USE OF MRI IN THE SELECTION OF PATIENTS K.-H. Koo, H.-R. Song, J.-W. Yang, P. Yang, J.-R. Kim, Y.-M. Kim From the Gyeong-Sang
More informationBone Bangalore
Dr Suresh Annamalai MBBS, MRCS(Edn), FRCS( Tr & Orth)(Edn), FEBOT(European Board), Young Hip and Knee Fellowship(Harrogate, UK) HOD & Consultant Arthroplasty and Arthroscopic Surgeon Manipal Hospital,
More informationMRI of the Hips and Pelvis
MRI of the Hips and Pelvis Hips and Pelvis Protocols Vascular abnormalities Fractures Soft tissues Labrum and FAI Hips and Pelvis Protocols Vascular abnormalities Fractures Soft tissues Labrum and FAI
More informationEvangelia E. Vassalou MD,PhD Radiologist Department of Medical Imaging, Heraklion University Hospital Department of Medical Imaging, Sitia General
Evangelia E. Vassalou MD,PhD Radiologist Department of Medical Imaging, Heraklion University Hospital Department of Medical Imaging, Sitia General Hospital Osteonecrosis pathophysiology epidemiology imaging
More informationUnique MRI Findings as an Early Predictor of Osteonecrosis in Pediatric Acute Lymphoblastic Leukemia
Pediatric Imaging Original Research Sansgiri et al. MRI of Osteonecrosis Associated With Pediatric Acute Lymphoblastic Leukemia Pediatric Imaging Original Research FOCUS ON: Rakhee Kisan Sansgiri 1 Michael
More informationPrevalence of Meniscal Radial Tears of the Knee Revealed by MRI After Surgery
Downloaded from www.ajronline.org by 46.3.207.114 on 12/22/17 from IP address 46.3.207.114. Copyright RRS. For personal use only; all rights reserved Thomas Magee 1 Marc Shapiro David Williams Received
More informationA Patient s Guide to Avascular Necrosis of the Hip
A Patient s Guide to Avascular Necrosis of the Hip 2350 Royal Boulevard Suite 200 Elgin, IL 60123 Phone: 847.931.5300 Fax: 847.931.9072 DISCLAIMER: The information in this booklet is compiled from a variety
More informationCT Findings of Traumatic Posterior Hip Dislocation after Reduction 1
CT Findings of Traumatic Posterior Hip Dislocation after Reduction 1 Sung Kyoung Moon, M.D., Ji Seon Park, M.D., Wook Jin, M.D. 2, Kyung Nam Ryu, M.D. Purpose: To evaluate the CT images of reduced hips
More informationViviane Khoury, MD. Assistant Professor Department of Radiology University of Pennsylvania
U Penn Diagnostic Imaging: On the Cape Chatham, MA July 11-15, 2016 Viviane Khoury, MD Assistant Professor Department of Radiology University of Pennsylvania Hip imaging has changed in recent years: new
More informationAvascular Necrosis of the Foot. Dr. Hema Choudur MD, FRCPC Associate Professor. Dept. of Radiology. McMaster University, Hamilton, Canada.
Avascular Necrosis of the Foot Dr. Hema Choudur MD, FRCPC Associate Professor. Dept. of Radiology. McMaster University, Hamilton, Canada. Avascular Necrosis: Pathophysiology Ischemia to the bone from oxygen
More informationThe Role of MR Imaging in Avascular Necrosis of the Femoral Head
The Role of MR Imaging in Avascular Necrosis of the Femoral Head Apostolos H. Karantanas, M.D., Ph.D. 1 and Eleni E. Drakonaki, M.D., Ph.D. 1 ABSTRACT Due to the pattern of its blood supply, the femoral
More informationHip Biomechanics and Osteotomies
Hip Biomechanics and Osteotomies Organization Introduction Hip Biomechanics Principles of Osteotomy Femoral Osteotomies Pelvic Osteotomies Summary Inroduction Osteoarthritis is very prevalent Primary OA
More informationCLINICAL PRESENTATION AND RADIOLOGY QUIZ QUESTION
Donald L. Renfrew, MD Radiology Associates of the Fox Valley, 333 N. Commercial Street, Suite 100, Neenah, WI 54956 9/22/2012 Radiology Quiz of the Week # 91 Page 1 CLINICAL PRESENTATION AND RADIOLOGY
More informationOSTEOPHYTOSIS OF THE FEMORAL HEAD AND NECK
908 RDIOLOGIC VIGNETTE OSTEOPHYTOSIS OF THE FEMORL HED ND NECK DONLD RESNICK Osteophytes are frequently considered the most characteristic abnormality of degenerative joint disease. In patients with osteoarthritis,
More informationSummary. Introduction. Materials and methods
Osteoarthritis and Cartilage (2000) 8, 303 308 2000 OsteoArthritis Research Society International 1063 4584/00/040303+06 $35.00/0 doi:10.1053/joca.1999.0305, available online at http://www.idealibrary.com
More informationThe mandibular condyle fracture is a common mandibular
ORIGINAL RESEARCH P. Wang J. Yang Q. Yu MR Imaging Assessment of Temporomandibular Joint Soft Tissue Injuries in Dislocated and Nondislocated Mandibular Condylar Fractures BACKGROUND AND PURPOSE: Evaluation
More informationThe Pavlik harness is a positioning device commonly
RESEARCH PAPERS Ultrasound Evaluation of Hip Position in the Pavlik Harness Leslie E. Grissom, MD*, H. Theodore Harcke, MD*, S. Jay Kumar, MOt, George S. Bassett, MOt, G. Dean MacEwen, MOt Fifty infants
More information1 Normal Anatomy and Variants
1 Normal Anatomy and Variants 1.1 Normal Anatomy MR Technique. e standard MR protocol for a routine evaluation of the spine always comprises imaging in sagittal and axial planes, while coronal images are
More informationCase 27 Clinical Presentation
53 Case 27 Clinical Presentation 40-year-old man presents with acute shoulder pain and normal findings on radiographs. 54 RadCases Musculoskeletal Radiology Imaging Findings (,) Coronal images of the shoulder
More informationRadiologic Pathologic Correlation of Intraosseous Lipomas. Tim Propeck 1, Mary Anne Bullard 1, John Lin 1, Kei Doi 2, William Martel 1
Downloaded from www.ajronline.org by 148.251.232.83 on 04/10/18 from IP address 148.251.232.83. opyright RRS. For personal use only; all rights reserved Radiologic Pathologic orrelation of Intraosseous
More informationRadiographic Evaluation Of Dynamic Hip Instability In Lequesne s False Profile View
Radiographic Evaluation Of Dynamic Hip Instability In Lequesne s False Profile View Ryo Mori 1, Yuji Yasunaga 2, Takuma Yamasaki 1, Michio Hamanishi 1, Takeshi Shoji 1, Sotaro Izumi 1, Susumu Hachisuka
More informationCase Dysbaric osteonecrosis of the humerus
Case 14398 Dysbaric osteonecrosis of the humerus Magdalena Posadzy 1, Nicolas De Vos 2, 3, Filip Vanhoenacker2, 3, 4 1. W. Dega Orthopaedic and Rehabilitation University Hospital, Karol Marcinkowski University
More informationFOR CMS (MEDICARE) MEMBERS ONLY NATIONAL COVERAGE DETERMINATION (NCD) FOR MAGNETIC RESONANCE IMAGING:
National Imaging Associates, Inc. Clinical guidelines BONE MARROW MRI Original Date: July 2008 Page 1 of 5 CPT Codes: 77084 Last Review Date: September 2014 NCD 220.2 MRI Last Effective Date: July 2011
More informationRetrospective review of radiographically occult femoral and pelvic fractures detected by MRI following low-energy trauma.
Retrospective review of radiographically occult femoral and pelvic fractures detected by MRI following low-energy trauma. Poster No.: P-0129 Congress: ESSR 2015 Type: Scientific Poster Authors: P. M. Yeap,
More informationMagnetic Resonance Angiography
Magnetic Resonance Angiography 1 Magnetic Resonance Angiography exploits flow enhancement of GR sequences saturation of venous flow allows arterial visualization saturation of arterial flow allows venous
More informationSynovial Chondromatosis Associated with Polyarteritis Nodosa
Synovial Chondromatosis Associated with Polyarteritis Nodosa Hywel Davies BSc ( ),Andrew J Unwin BSc, Nick P H Morgan BSc Windsor Knee Clinic, Windsor, United Kingdom Correspondence: Hywel Davies, Windsor
More informationScreening for and Assessment of Osteonecrosis in Oncology Patients. Sue C. Kaste, DO SPR Postgraduate Course 2015
Screening for and Assessment of Osteonecrosis in Oncology Patients Sue C. Kaste, DO SPR Postgraduate Course 2015 The author declares no potential conflicts of interest or financial disclosures Osteonecrosis
More informationMRI and CT Evaluation of Primary Bone and Soft- Tissue Tumors
749 Alex M. Aisen1 William Martel1 Ethan M. Braunstein1 Kim I. McMillin1 William A. Phillips2 Thomas F. KIing2 Received June 10, 1985; accepted after revision December 23, 1985. Presented at the annu meeting
More informationTHE DIAGNOSIS AND MANAGEMENT OF SPONTANEOUS AND POST-ARTHROSCOPY OSTEONECROSIS OF THE KNEE
THE DIAGNOSIS AND MANAGEMENT OF SPONTANEOUS AND POST-ARTHROSCOPY OSTEONECROSIS OF THE KNEE Abstract Spontaneous osteonecrosis of the knee (SPONK) and osteonecrosis in the postoperative knee (ONPK) are
More informationPublication for the Philips MRI Community
FieldStrength Publication for the Philips MRI Community Issue 38 Summer 2009 Pediatric MSK imaging benefits from tailored scan protocols Vanderbilt University Children s Hospital builds dedicated scans
More informationFemoroacetabular impingement in adolescents and young adults an update
U N I V E R S I T E T E T I B E R G E N Femoroacetabular impingement in adolescents and young adults an update Lene Bjerke Laborie, MD, PhD Paediatric Radiology Department, Haukeland University Hospital
More informationBilateral hip pain with right proximal femoral lesion
Bilateral hip pain with right proximal femoral lesion Legg-Calve-Perthes Idiopathic osteonecrosis of the femoral head epiphysis during childhood First described by Arthur Thorton Legg in 1909 and published
More informationDiffusion-weighted MR Imaging Offers No Advantage over Routine Noncontrast MR Imaging in the Detection of Vertebral Metastases
AJNR Am J Neuroradiol 1:948 953, May Diffusion-weighted MR Imaging Offers No Advantage over Routine Noncontrast MR Imaging in the Detection of Vertebral Metastases Mauricio Castillo, Andres Arbelaez, J.
More informationPeggers Super Summaries: Paediatric Hip
EMBRYOLOGY Development o Mesenchymal stem cells cartilage blood supply bone Dates o 6/40 Limb development o 8-11/40 hip development (acetabulum and hip formed from one bone splitting by apoptosis) o 16/40
More informationMonostotic Paget s Disease: A Case Report
Chin J Radiol 2002; 27: 117-121 117 CASE REPORT Monostotic Paget s Disease: A Case Report CHI-CHEN HOU 1 CHI WEI LO 2 JINN-MING CHANG 1 CHING-CHERNG TZENG 3 Department of Diagnostic Radiology 1, Orthopedics
More informationMRI Evaluation of Post Core Decompression Changes in Avascular Necrosis of Hip
Original Article MRI Evaluation of Post Core Decompression Changes in Avascular Necrosis of Hip DOI: 10.7860/JCDR/2015/13995.6967 Radiology Section Madhavi Nori 1, Sravan Kumar Marupaka 2, Swathi Alluri
More informationOriginal Report. The Reverse Segond Fracture: Association with a Tear of the Posterior Cruciate Ligament and Medial Meniscus
Eva M. Escobedo 1 William J. Mills 2 John. Hunter 1 Received July 10, 2001; accepted after revision October 1, 2001. 1 Department of Radiology, University of Washington Harborview Medical enter, 325 Ninth
More informationOctober 1999, Supplement 1 Volume 15 Number 7
October 1999, Supplement 1 Volume 15 Number 7
More information4/28/2010. Fractures. Normal Bone and Normal Ossification Bone Terms. Epiphysis Epiphyseal Plate (physis) Metaphysis
Fractures Normal Bone and Normal Ossification Bone Terms Epiphysis Epiphyseal Plate (physis) Metaphysis Diaphysis 1 Fracture Classifications A. Longitudinal B. Transverse C. Oblique D. Spiral E. Incomplete
More informationUtility of Dual-Energy CT to Evaluate Patients with Hip and Pelvis Pain in the ER Setting
Utility of Dual-Energy CT to Evaluate Patients with Hip and Pelvis Pain in the ER Setting Johnson, T., Moran, E., Glazebrook, K., Leng, S., Fletcher, J., and McCollough, C. An educational review ER011
More informationThe Low Sensitivity of Fluid-Attenuated Inversion-Recovery MR in the Detection of Multiple Sclerosis of the Spinal Cord
The Low Sensitivity of Fluid-Attenuated Inversion-Recovery MR in the Detection of Multiple Sclerosis of the Spinal Cord Mark D. Keiper, Robert I. Grossman, John C. Brunson, and Mitchell D. Schnall PURPOSE:
More informationAccuracy of SPECT bone scintigraphy in diagnosis of meniscal tears ABSTRACT
1 Iran J Nucl Med 2005; 23 Accuracy of SPECT bone scintigraphy in diagnosis of meniscal tears M. Saghari 1, M. Moslehi 1, J. Esmaeili 2, M.N. Tahmasebi 3, A. Radmehr 4, M. Eftekhari 1,2, A. Fard-Esfahani
More informationSURGICAL AND APPLIED ANATOMY
Página 1 de 6 Copyright 2001 Lippincott Williams & Wilkins Bucholz, Robert W., Heckman, James D. Rockwood & Green's Fractures in Adults, 5th Edition SURGICAL AND APPLIED ANATOMY Part of "37 - HIP DISLOCATIONS
More informationStephanie W. Mayer, MD. Director of Child and Young Adult Hip Preservation Sports Medicine Center Children s Hospital Colorado
Stephanie W. Mayer, MD Director of Child and Young Adult Hip Preservation Sports Medicine Center Children s Hospital Colorado University of Colorado Sports Medicine Assistant Team Physician, Colorado Avalanche
More informationA Patient s Guide to Transient Synovitis of the Hip in Children
A Patient s Guide to Transient Synovitis of the Hip in Children 651 Old Country Road Plainview, NY 11803 Phone: 5166818822 Fax: 5166813332 p.lettieri@aol.com DISCLAIMER: The information in this booklet
More informationEvaluation of femoral head necrosis using a volumetric method based on MRI
1 of 4 Evaluation of femoral head necrosis using a volumetric method based on MRI A. Bassounas 1, D. I. Fotiadis 2, K. N. Malizos 3 MD 1 Medical Physics Division, Medical School, University of Ioannina,
More informationNormal Anatomy and Strains of the Deep Musculotendinous Junction of the Proximal Rectus Femoris: MRI Features
Musculoskeletal Imaging Clinical Observations Gyftopoulos et al. MRI of the Proximal Rectus Femoris Musculotendinous Junction Musculoskeletal Imaging Clinical Observations Soterios Gyftopoulos 1 Zehava
More informationThe condition occurs when the proximal femur repeatedly comes into contact with the native acetabular rim during normal hip range of motion.
RIM SYNDROME [femoroacetabular impingement] It has been suggested to be a preosteoarthritic mechanism. The condition occurs when the proximal femur repeatedly comes into contact with the native acetabular
More informationSubchondral Fractures in Osteonecrosis of the Femoral Head: Comparison of Radiography, CT, and MR Imaging
Kathryn Stevens 1 Caroline Tao 1 Shi-Uk Lee 1 Natalie Salem 1 Jan Vandevenne 1 Calise Cheng 1 Gesa Neumann 2 lexandre-valentin-opran 3 Philipp Lang 2 Received pril 23, 2001; accepted after revision July
More informationCLINICS IN SPORTS MEDICINE
Clin Sports Med 25 (2006) 365 369 CLINICS IN SPORTS MEDICINE A Acetabular labrum, tears of, hip arthroscopy in, 264 Acetabular rim, trimming of, and labral repair, new method for, 293 297 Acetabulum, femoral
More informationCase Report: Knee MR Imaging of Haemarthrosis in a Case of Haemophilia A
Clinical > Pediatric Imaging Case Report: Knee MR Imaging of Haemarthrosis in a Case of Haemophilia A M. A. Weber, J. K. Kloth University Hospital Heidelberg, Department of Diagnostic and Interventional
More informationMR Imaging of Avascular. ofthe Femoral Head1
MR Imaging of Avascular Necrosis and Transient Marrow Edema ofthe Femoral Head1 B. E. Vande Berg MD J. J. Malgbem, MD M. A. Labaisse, MD H. M. Noel, MD B. E. Maldague, MD The value of high spatial resolution
More informationCAN SOFT TISSUES STRUCTURES DIFFERENTIATE BETWEEN DYSPLASIA AND CAM-FAI OF THE HIP?
CAN SOFT TISSUES STRUCTURES DIFFERENTIATE BETWEEN DYSPLASIA AND CAM-FAI OF THE HIP? A Le Bouthillier, KS Rakhra 1, PE Beaulé 2, RCB Foster 1 1 Department of Medical Imaging 2 Division of Orthopaedic Surgery
More informationSonographic Findings of Adductor Insertion Avulsion Syndrome With Magnetic Resonance Imaging Correlation
Case Report Sonographic Findings of Adductor Insertion Avulsion Syndrome With Magnetic Resonance Imaging Correlation Jennifer S. Weaver, MD, Jon A. Jacobson, MD, David A. Jamadar, MBBS, Curtis W. Hayes,
More informationThe Temporomandibular joint: Anatomy, Mechanics, Pathology. Aditya Bahel, DO
The Temporomandibular joint: Anatomy, Mechanics, Pathology Aditya Bahel, DO Outline Anatomy Mechanics and function Indications for TMJ imaging MR Protocols and pitfalls Pathology Treatment options Anatomy
More information52, 215 mg kg - 1 d - 1
212 1218 52 215 mg kg - 1 d - 1 2 8 1/ 4 6 4 ; ; Changes of blood vessels in glucocorticoid2induced avascular necrosis of femoral head in rabbits ZHOU Qiang LI Qihong YANGLiu et al. Department of Orthopaedics
More informationThe Behavior of Pantopaque on MR: In Vivo and In Vitro
997 The Behavior of Pantopaque on MR: In Vivo and In Vitro Analyses Ira F. Braun 1 John A. Maiko Patricia C. Davis James C. Hoffman, Jr. Louis H. Jacobs MR imaging is considered by many to be the procedure
More informationRECENT ADVANCES IN CLINICAL MR OF ARTICULAR CARTILAGE
In Practice RECENT ADVANCES IN CLINICAL MR OF ARTICULAR CARTILAGE By Atsuya Watanabe, MD, PhD, Director, Advanced Diagnostic Imaging Center and Associate Professor, Department of Orthopedic Surgery, Teikyo
More informationThe Natural History of Untreated Asymptomatic Hips in Patients Who Have Non-Traumatic Osteonecrosis*
Copyright 1997 by The Journal ofbone ami Joint Surgery, Incorporated The Natural History of Untreated Hips in Patients Who Have Non-Traumatic Osteonecrosis* BY HARRY E. JERGESEN, M.D.t, AND A. SHABI KHAN,
More informationCLINICAL PRESENTATION AND RADIOLOGY QUIZ QUESTION
Donald L. Renfrew, MD Radiology Associates of the Fox Valley, 333 N. Commercial Street, Suite 100, Neenah, WI 54956 11/24/2012 Radiology Quiz of the Week # 100 Page 1 CLINICAL PRESENTATION AND RADIOLOGY
More informationKnee: Cruciate Ligaments
72 Knee: Cruciate Ligaments R. Kent Sanders Sagittal oblique 2.5-mm sequences along the plane of the anterior cruciate ligament (ACL) typically yield three to four images of the ACL, with the first medial
More informationFriday Teaching. Bones
Friday Teaching Bones Regarding slipped femoral capital epiphysis It represents Salter Harris type V injury 20% are bilateral There is slight widening of the joint space Slip is typically posteromedial
More informationValue of Lipid- and Water- Suppression MR Images in Distinguishing Between Blood and Lipid Within Ovarian Masses
321 Value of Lipid- and Water- Suppression MR Images in Distinguishing Between Blood and Lipid Within Ovarian Masses Ruben Kier1 The distinction between blood and lipid in ovarian masses on MR imaging
More informationThe Painful Hip. Jennifer R Marks, MD
The Painful Hip Jennifer R Marks, MD The Painful Hip A 64 yo F presents to clinic complaining of a sore hip What further questions do you have for this patient? What is on your differential diagnosis?
More informationIdiopathic osteonecrosis of the medial tibial plateau
Idiopathic osteonecrosis of the medial tibial plateau J. R. Valenti J. A. Illescas A. Barriga R. Dölz ABSTRACT Osteonecrosis of the medial tibial plateau is characterized by acute pain on the medial aspect
More informationA 4 year old with hip pain: Legg-Calvé-Perthes Disease
A 4 year old with hip pain: Legg-Calvé-Perthes Disease Cyndie Seraphin Harvard Medical School Year III Our Patient A 4 year-old boy is complaining of severe L hip pain. The differential diagnosis of acute
More informationTHE HIP. Cooler than cool, the pinnacle of what is "it". Beyond all trends and conventional coolness.
THE HIP Cooler than cool, the pinnacle of what is "it". Beyond all trends and conventional coolness. Objectives Hip anatomy Causes of hip pain Hip exam Anatomy Bones Ilium Anterior Superior Iliac Spine
More informationAnatomical and Functional MRI of the Pancreas
Anatomical and Functional MRI of the Pancreas MA Bali, MD, T Metens, PhD Erasme Hospital Free University of Brussels Belgium mbali@ulb.ac.be Introduction The use of MRI to investigate the pancreas has
More informationSensitivity and Specificity in Detection of Labral Tears with 3.0-T MRI of the Shoulder
Magee and Williams MRI for Detection of Labral Tears Musculoskeletal Imaging Clinical Observations C M E D E N T U R I C L I M G I N G JR 2006; 187:1448 1452 0361 803X/06/1876 1448 merican Roentgen Ray
More informationA novel method for assessing postoperative femoral head reduction in developmental dysplasia of the hip
J Child Orthop (2014) 8:319 324 DOI 10.1007/s11832-014-0600-5 ORIGINAL CLINICAL ARTICLE A novel method for assessing postoperative femoral head reduction in developmental dysplasia of the hip Anthony Cooper
More informationSC FE. Slipped Capital Femoral Epiphysis SPR
SC FE Slipped Capital Femoral Epiphysis SPR Disclosures Lecture specific-nothing to disclose. Dr. Taragin is a member of the medical advisory board of Carestream Health. SAM Goal SCFE = SCIFI PRESENTATION
More informationThis presentation is the intellectual property of the author. Contact them for permission to reprint and/or distribute.
MRI of the Knee Jennifer Swart, M.D. Musculoskeletal Radiology South Texas Radiology Group Outline Coils, Patient Positioning Acquisition Parameters, Planes and Pulse Sequences Knee Arthrography Normal
More informationImaging Choices in Occult Hip Fracture
Introduction Imaging Choices in Occult Hip Fracture Jesse Cannon, MD; Salvatore Silvestri, MD; Mark Munro, MD J Emerg Med. 2009;32(3):144-152 Reporter PGY 宋兆家 Supervisor VS 侯勝文 990220 High dependence on
More informationRetroversion of the contralateral adult acetabulum after previous Perthes disease
Acta Orthop. Belg., 2010, 76, 42-47 ORIGINAL STUDY Retroversion of the contralateral adult acetabulum after previous Perthes disease Robert P. BERG, Richard GALANTAY, Henk EIJER From the University of
More informationThis presentation is the intellectual property of the author. Contact them at for permission to reprint and/or distribute.
MRI of the Knee Jennifer Swart, M.D. Musculoskeletal Radiology South Texas Radiology Group Financial Disclosure Dr. Jennifer Swart has no relevant financial relationships with commercial interests to disclose.
More informationMRI XR, CT, NM. Principal Modality (2): Case Report # 2. Date accepted: 15 March 2013
Radiological Category: Musculoskeletal Principal Modality (1): Principal Modality (2): MRI XR, CT, NM Case Report # 2 Submitted by: Hannah Safia Elamir, D.O. Faculty reviewer: Naga R. Chinapuvvula, M.D.
More informationPost-traumatic osteonecrosis of distal tibia
Injury Extra (2007) 38, 262 266 www.elsevier.com/locate/inext CASE REPORT Post-traumatic osteonecrosis of distal tibia D. Chakravarty a, *, A. Khanna a,1, A. Kumar b,2 a Department of Orthopaedics, Peterborough
More informationDisclosure. Acknowledgement. What is the Best Workup for Rectal Cancer Staging: US/MRI/PET? Rectal cancer imaging. None
What is the Best Workup for Rectal Cancer Staging: US/MRI/PET? Zhen Jane Wang, MD Assistant Professor in Residence UC SF Department of Radiology Disclosure None Acknowledgement Hueylan Chern, MD, Department
More informationMRI of the Shoulder What to look for and how to find it? Dr. Eric Handley Musculoskeletal Radiologist Cherry Creek Imaging
MRI of the Shoulder What to look for and how to find it? Dr. Eric Handley Musculoskeletal Radiologist Cherry Creek Imaging MRI of the Shoulder Benefits of Ultrasound: * Dynamic * Interactive real time
More informationModified Oblique Sagittal Magnetic Resonance Imaging of Rotator Cuff Tears: Comparison with Standard Oblique Sagittal Images
Journal of Magnetics 22(3), 519-524 (2017) ISSN (Print) 1226-1750 ISSN (Online) 2233-6656 https://doi.org/10.4283/jmag.2017.22.3.519 Modified Oblique Sagittal Magnetic Resonance Imaging of Rotator Cuff
More informationCLINICAL PRESENTATION AND RADIOLOGY QUIZ QUESTION
Donald L. Renfrew, MD Radiology Associates of the Fox Valley, 333 N. Commercial Street, Suite 100, Neenah, WI 54956 12/01/2012 Radiology Quiz of the Week # 101 Page 1 CLINICAL PRESENTATION AND RADIOLOGY
More informationEthan M. Braunstein, M.D. 1, Steven A. Goldstein, Ph.D. 2, Janet Ku, M.S. 2, Patrick Smith, M.D. 2, and Larry S. Matthews, M.D. 2
Skeletal Radiol (1986) 15:27-31 Skeletal Radiology Computed tomography and plain radiography in experimental fracture healing Ethan M. Braunstein, M.D. 1, Steven A. Goldstein, Ph.D. 2, Janet Ku, M.S. 2,
More informationSpeaker s Disclosure Statement. Starvation, Death and Destruction: The Battlefield of AVN. Objectives. Risk Factors
Starvation, Death and Destruction: The Battlefield of AVN Speaker s Disclosure Statement I have no industry relationships to disclose I will discuss off-label use of medications Dana-Farber/Boston Children
More informationA Patient s Guide to Femoroacetabular Impingement (FAI) of the Hip
A Patient s Guide to Femoroacetabular Impingement (FAI) of the Hip 651 Old Country Road Plainview, NY 11803 Phone: 5166818822 Fax: 5166813332 p.lettieri@aol.com DISCLAIMER: The information in this booklet
More informationPrediction of posttraumatic femoral head osteonecrosis by quantitative intraosseous aspirate and core biopsy analysis: A prospective study
Acta Orthop. Belg., 2010, 76, 486-492 ORIGINAL STUDY Prediction of posttraumatic femoral head osteonecrosis by quantitative intraosseous aspirate and core biopsy analysis: A prospective study Ramesh Kumar
More informationNon-Arthroplasty Hip Surgery. Javad Parvizi MD FRCS Professor of Orthopaedic Surgery
Non-Arthroplasty Hip Surgery Javad Parvizi MD FRCS Professor of Orthopaedic Surgery Subcapital reduction osteotomy Relative lengthening of femoral neck (Perthes) AVN surgery Femoral osteotomy Trap door
More informationMRI of LEFT KNEE. There is a fluid collection seen anterior to and inferior to the superiorly displaced patella.
MRI of LEFT KNEE Protocol: Multiplanar MRI of the left knee joint performed in the sagittal, coronal and transverse planes using T1 weighted spin echo, T2 and proton-density weighted fast spin echo, fatsaturated
More informationMRI IN THE CHARACTERIZATION OF SEMINOMATOUS AND NONSEMINOMATOUS GERM CELL TUMORS OF THE TESTIS
MRI IN THE CHARACTERIZATION OF SEMINOMATOUS AND NONSEMINOMATOUS GERM CELL TUMORS OF THE TESTIS Ambesh Deshar *, Gyanendra KC and Zhang Lopsang *Department of Medical Imaging and Nuclear Medicine, First
More informationMRI PEDIATRIC PROTOCOLS (Updated 6/19/2018)
MRI PEDIATRIC PROTOCOLS (Updated 6/19/2018) *Please get or let us know where radiologist can review plain films. *For Texas Orthopedics and other Docs requesting only MSK section read for their pediatric
More informationof the lumbar facet joints there
Skeletal Radiol (1999) 28:215±219 International Skeletal Society 1999 A R T I C L E Dominik Weishaupt Marco Zanetti Norbert Boos Juerg Hodler MR imaging and CT in osteoarthritis of the lumbar facet joints
More informationMR Advance Techniques. Vascular Imaging. Class II
MR Advance Techniques Vascular Imaging Class II 1 Vascular Imaging There are several methods that can be used to evaluate the cardiovascular systems with the use of MRI. MRI will aloud to evaluate morphology
More informationMagnetic resonance imaging (MR!) provides
0 Wallerian Degeneration of the Pyramidal Tract in Capsular Infarction Studied by Magnetic Resonance Imaging Jesiis Pujol, MD, Josep L. Marti-Vilalta, MD, Carme Junqu6, PhD, Pere Vendrell, PhD, Juan Fernandez,
More informationEffects of Age and Body Mass Index on the Results of Transtrochanteric Rotational Osteotomy for Femoral Head Osteonecrosis Surgical Technique
75 Copyright 2011 by The Journal of Bone and Joint Surgery, Incorporated Effects of Age and Body Mass Index on the Results of Transtrochanteric Rotational Osteotomy for Femoral Head Osteonecrosis Surgical
More informationRelationship of Idiopathic Osteonecrosis of the Femoral Head to Perfusion Changes in the Proximal Femur by Dynamic Contrast-Enhanced MRI
Musculoskeletal Imaging Original Research Chan et al. Dynamic Contrast-Enhanced MRI of Femoral Idiopathic Osteonecrosis Musculoskeletal Imaging Original Research Wing P. Chan 1,2 Yi-Jui Liu 3 Guo-Shu Huang
More information