Keywords: Mandible, Maxilla, Teeth, Cone Beam CT, Implants, Tumor and tumor-like conditions
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1 Dental Cone Beam CT: a primer for clinical radiologists e-poster: EP-1 Congress: ESHNR 2014 Type: Educational Poster Topic: ESHNR 2014 Authors: C. Vanhoenacker 1, F. Vanhoenacker 1, L. Vannitsen 1, A. Bernaerts 2, M. Vansevenant 1, F. Catry 1, S. Dekeyzer 1, K. Chapelle 1 ; 1 Duffel/BE, 2 Wilrijk/BE Keywords: Mandible, Maxilla, Teeth, Cone Beam CT, Implants, Tumor and tumor-like conditions Any information contained in this pdf file is automatically generated from digital material submitted to e-poster by third parties in the form of scientific presentations. References to any names, marks, products, or services of third parties or hypertext links to third-party sites or information are provided solely as a convenience to you and do not in any way constitute or imply ESHNR s endorsement, sponsorship or recommendation of the third party, information, product, or service. ESHNR is not responsible for the content of these pages and does not make any representations regarding the content or accuracy of material in this file. As per copyright regulations, any unauthorised use of the material or parts thereof as well as commercial reproduction or multiple distribution by any traditional or electronically based reproduction/publication method is strictly prohibited. You agree to defend, indemnify, and hold ESHNR harmless from and against any and all claims, damages, costs, and expenses, including attorneys fees, arising from or related to your use of these pages. Please note: Links to movies, ppt slideshows and any other multimedia files are not available in the pdf version of presentations.
2 1. Learning Objectives The purpose of this pictorial review is threefold: (1) to familiarize clinical radiologists with anatomy of the teeth and jaw bones (2) to provide simple guidelines for interpretation of Dental Cone Beam Computed Tomography (CBCT) (3) to illustrate the most frequent pathologic conditions seen on CBCT. dia1.jpg
3 dia2.jpg dia3.jpg 2. Background CBCT has become standard of care in dental radiology.
4 Whereas the technique was initially used in the clinical practice of dentists and oral surgeons, nowadays CBCT technology has been installed in many radiology departments for evaluation of a variety of dental and nondental applications. Traditionally, the curriculum of clinical radiologists does not include specific training in dento-alveolar pathology. Reporting dental CBCT examinations requires essential knowledge of dental anatomy and pathology as well as systematic analysis of all related structures. In CBCT, a cone-shaped ray beam makes a single rotation around the patient and is projected on a flat panel detector, unike Multi Detector CT (MDCT) where a fanshaped beam and concave detector rotate in a helical fashion. The major advantage of CBCT is high spatial resolution imaging, acquired at lower radiation doses than MDCT studies. The disadvantages of CBCT include lower contrast resolution (i.e. soft tissue visualization) and a longer imaging time (susceptibility to movement artifacts). CBCT has also a limited field of view. slide 5.jpg
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6 dia7.jpg 3. Imaging Findings or Procedure Details This pictorial review will briefly review teeth anatomy (enamel, dentin, pulp horn, chamber and canal and periodontal space) and jaw bone. Imaging analysis starts usually with looking at scout views, followed by systematic scrolling through the axial, coronal and sagittal planes. The second step consists of specific assessment of the area of clinical interest. The third step is evaluation of multiplanar reconstructions, such as thick slice panoramic and parasagittal reconstructions. Most frequent clinical indications for dental bone CBCT are: Preoperative (bone quality and quantity) and postoperative evaluation of implants. Anomalies in number and location of teeth and teeth impactions. Periapical inflammation and resorption. Radiolucent and radiopaque tumor-and tumorlike conditions. Radiolucent lesions are more frequent than radioopake or mixed lesions. Although definitive diagnosis cannot be made solely on imaging, important semiologic criteria for differential diagnosis are location, evaluation of the margins, shape, displacement or destruction of adjacent structures and jaw expansion or destruction. Evaluation of dental and bony trauma. Non dental pathology such as inflammation, retention cyst or mucocoele of the maxillary sinusses are often found. The radiologist should be able to suggest a nonodontogenic or odontogenic etiology of sinus pathology.
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60 dia114.jpg dia115.jpg 4. Conclusion For correct interpretation of dental CBCT, knowledge of dento-alveolar anatomy and pathology is a
61 prerequisite. The radiologic report should be systematic and complete. 5. References References Koenig LJ (2012). Diagnostic Imaging: Oral and Maxillofacial Imaging. Amirsys Cawood J.I., Howell R.A. (1988). A classification of the edentulous jaws. Int J Oral Maxillofac Surg, 17: Lekholm U., Zar b G.A. (1985): Patient selection and interpretation. In: Osseo-integration in clinical dentistry. Edited by Branemark P.I, et al. Printed by Quintessence, Chicago, pp Bernaerts A, et al. (2006). Conventional dental radiology: what the general radiologist needs to know; JBR-BTR, 89(1):23-32 Bernaerts A, et al. (2006). The role of dental CT imaging in dental implantology. JBR-BTR, 89(1):32-42 Sedentex CT website: Jacobs R (2014). Heb al eens goed gekeken naar de beelden?. Tandheelkundige Tijdingen 41 (4) Barnes L, Eveson JW, Reichart P, Sidransky D. (2005) World Health Organization classification of tumours. Pathology and genetics of head and neck tumours (1st edn). Lyon: IARC Press.. Casselman JW, et al (2013). Cone Beam CT: Non-dental applications. JBR-BTR, 96 (6):
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Death due to Hypothermia: Postmortem Forensic Computed Tomography.
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Characterisation of cervical lymph nodes by US and PET-CT
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Spinal injury is very common in Ireland: 19 per 100,000 (1). It poses a significant disease burden.
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Long bones manifestations of congenital syphilis
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Pneumo-esophageal 64-MDCT technique for gastric cancer evaluation
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Retrospective review of radiographically occult femoral and pelvic fractures detected by MRI following low-energy trauma.
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Sonographic and Mammographic Features of Phyllodes Tumours of the Breast: Correlation with Histological Grade
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Persistent ankle pain after inversion lesions: what the radiologist must look for
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CT Enteroclysis in the Diagnosis of Crohn's Disease (CD)
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3D ultrasound applied to abdominal aortic aneurysm: preliminary evaluation of diameter measurement accuracy
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Breast cancer tumor size: Correlation between MRI and histopathology
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Diffusion-weighted MRI (DWI) "claw sign" is useful in differentiation of infectious from degenerative Modic I signal changes of the spine
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MR-guided prostatic biopsy at 3T: the role of PI-RADS-score: a histopahologic-radiologic correlation
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Quantifying Dual-energy computed tomography (DECT) in patients with renal calculi using a Toshiba Aquilion One Scanner.
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PET/CT depiction of ATS mediastinal nodal stations: What every radiologist should know - diagnostic strategies and potential pitfalls
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MDCT signs differentiating retroperitoneal and intraperitoneal lesions- diagnostic pearls
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Biliary tree dilation - and now what?
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Audit of CT Pulmonary Angiogram in suspected pulmonary embolism patients
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Role of positron emission mammography (PEM) for assessment of axillary lymph node status in patients with breast cancer
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MRI in Patients with Forefoot Pain Involving the Metatarsal Region
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Radiofrequency ablation combined with conventional radiotherapy: a treatment option for patients with medically inoperable lung cancer
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Diffuse Alveolar Hemorrhage: Initial and Follow-up HRCT Features
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High frequency US of the temporomandibualar joint (TMJ) - practical guide
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