How do the Parameters affect Image Quality and Dose for Abdominal CT? Image Review

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "How do the Parameters affect Image Quality and Dose for Abdominal CT? Image Review"

Transcription

1 How do the Parameters affect Image Quality and Dose for Abdominal CT? Image Review Mannudeep K. Kalra, MD, DNB Massachusetts General Hospital Harvard Medical School

2 Financial Disclosure This presentation was made possible with support from RSNA R & E Foundation s Education Scholar Grant GE Healthcare: Faculty for Master Course on Radiation

3 Learning Points Understand effects of scan parameters on abdominal CT images Apply knowledge of image and lesion appearance to make indication specific CT protocols.

4 Lungs: Lack of Effect at Lower Dose 270 mas 20 mgy 135 mas 10 mgy 70 mas : 5 mgy 35 mas : 2.7 mgy 18 ma s : 1.3 mgy

5 Lungs = High Contrast = CT Colonography Low Dose

6 CT Colonography: High Contrast = Lower Dose mas: kv Flat polyp (8 mm) 2-4 mgy

7 What else is high contrast in Abdomen? High contrast = Kidney stones Calcium Vs Soft tissues Lower Dose

8 Kidney stone CT: Seen at Lower Dose FBP 300 mas 140 kv 30 mgy 350 mas 120 kv 24 mgy 200 mas 120 kv 13 mgy 65 kg BMI mas 120 kv 7 mgy 50 mas 120 kv 3.4 mgy

9 URINARY STONE CT Tube Potential Tube current (prefer AEC) Image thickness (mm) CTDI vol 120 KV commonly (100 kv< 60 kg) About 30-50% lower than routine abdomen 2.5-5mm 2-6 mgy (size based) A B Fixed ma Use AEC (NI 20) (A) CT images of 60-year-old man acquired with fixed current and (B) AEC at NI 20 show a tiny calculus (arrow) in left renal pelvis. AEC (A) enabled 50% dose reduction compared to fixed current technique.

10 Calcium : Seen at Lower Dose Radiodense stones (GB) can also be seen at low dose FBP 300 mas 140 kv 30 mgy 350 mas 120 kv 24 mgy 200 mas 120 kv 13 mgy 100 mas 120 kv 7 mgy 50 mas 120 kv 3.4 mgy

11 Bones- chest or abdomen: Well Seen at Lower Dose 200 mas 12 mgy FBP 150 mas 9 mgy FBP 100 mas 6 mgy FBP 50 mas 3 mgy FBP

12 What else is high contrast in Abdomen? Contrast enhancing Structures (vessels= CTA) Lesions (hypervascular lesions) Lower KV= lower Dose

13 140 kv 29 mgy Different KV 120 kv 24 mgy 80 kv 8 mgy Mean HU SD: kv 16 mgy Mean HU SD: 13.8 Mean HU SD: 42.9 Mean HU SD: 30.6

14 CTA of Aorta High Contrast CTA allows use of lower KV (non-obese) 100 kv (60 cc) 160 mas 7 mgy 80 kv (60 cc) 260 mas 5 mgy 2009 Lippincott Williams & Wilkins, Inc. Published by Lippincott Williams & Wilkins, Inc. 80 kv (45 cc) 260 mas 5 mgy Schindera, Sebastian et al. Investigative Radiology. 44(10): , October 2009.

15 Multiphase Liver CT: Lower KV + IR algorithm Contrast enhancing lesions: HCC & metastasis 140 kv 300 mas 5 mm FBP 17 msv 80 KV 540 mas 5 mm FBP 5 msv 80 kv 540 mas 5mm Hybrid IR 5 msv IR helps

16 Multiphase Liver: Lower KV + IR Contrast enhancing lesions: HCC & metastasis IR helps 120 kv mas 5 mm FBP 20 mgy 80 KV mas 5 mm FBP 11 mgy 80 kv mas 5mm Hybrid IR 11 mgy

17 Multiphase Exam: Dose Reduction: Liver Arterial phase: Lower kv (100) Liver only coverage AEC PV phase: Usual or Lower kv Longer coverage AEC

18 CT Enterography (CTE): Lower Dose Rel. higher contrast Oral contrast Vs bowel wall FBP 200 mas 7 mgy FBP 100 mas 3.5 mgy IRIS 10 mas 3.5 mgy = Lower Dose 50% of routine CT

19 Routine abdomen CT Higher dose than kidney stones and CTC Lower contrast between soft tissue lesions and soft tissue organs

20 Routine Abdomen: Patient factors and Dose o o o Size: Obese vs average or slim o Use AEC always for ma optimization o Lower kv in smaller patients with contrast CT helps cut dose Arms by the side of the patient o Keep out or Keep above the abdomen with pad not besides Patient motion (voluntary or involuntary) o Pitch > 1; Rotation time < 0.8 second

21 Routine Abdomen: Use AEC Obese 339 mas 23 mgy Average/slim 65 kg 115 kg 200 mas 14 mgy 50 mas 3.4 mgy 200 mas 14 mgy 50 mas 100 mas 3.4 mgy 6.7 mgy

22 633 ma 90 ma 24 mgy 360 ma 3.4 mgy 45 ma 180 ma 14 mgy 1.7 mgy 7 mgy

23 135 mas 10 mgy 270 mas CTDI vol: 20 mgy 18 mas 1.3 mgy Varying mas 120 kv 5 mm, Pitch: 0.9:1 FBP: B30 67 mas 5.0 mgy 36 mas 2.7 mgy

24 CT For Hematuria: Decreasing Scan Phases Wider x-ray beam 1.25 >> Pitch ~ or > 1:1 Tube Potential (kv) Tube current Use AEC Unenhanced CT 50 ml IV contrast bolus 250 ml saline drip infusion Wait 15 minutes (Prone) 100 ml IV contrast 3 ml/sec. Scan at 100-sec. delay 46-year-old woman with hematuria. Optimal enhancement of kidneys and adequate opacification and distension of ureters seen. Maher MM, Kalra MK, et al. BJR 2004

25 Non-contrast limit coverage: kidneys to SP Lower dose ( - 50%) AEC Multiphase Exam: Hematuria Post Contrast: Wider coverage AEC

26 CT Appendicitis: Lower Dose Standard Dose: mas AEC 120 kv 122 mgy.cm Lower Dose mas AEC 544 mgy.cm CE CT: 3ml/sec

27 Benign Disease: Young Patients Ex: Appendicitis Limited coverage: L3 to SP AEC for size adapted dose

28 Lower noise: Higher dose Rule out Abdo CT Low contrast lesions Use AEC to optimize Lesion Detection high confidence Higher noise = Lower dose CT colonography CT angiography Kidney stones Hypervascular lesions Use AEC &/ low kv

Low Dose Era in Cardiac CT

Low Dose Era in Cardiac CT Low Dose Era in Cardiac CT DIANA E. LITMANOVICH, MD Department of Radiology Beth Israel Deaconess Medical Center Harvard Medical School Disclosures Neither I nor my immediate family members have a financial

More information

Justification of the use of CT for individual health assessment of asymptomatic people: the Chinese experience

Justification of the use of CT for individual health assessment of asymptomatic people: the Chinese experience Justification of the use of CT for individual health assessment of asymptomatic people: the Chinese experience Liang Wang, MD, PhD Professor, attending radiologist wang6@tjh.tjmu.edu.cn Dept. of Radiology

More information

CT dose survey data acquisition form

CT dose survey data acquisition form CT dose survey data acquisition form CT Protocol page CT Head (acute stroke) C-spine (fracture) Chest (lung cancer) Chest High-Res. (interstitial lung disease) CTA (blood vessels) CTPA (PE) Abdomen (liver

More information

Ask EuroSafe Imaging. Tips & Tricks. CT Working Group. Optimization of scan length to reduce CT radiation dose

Ask EuroSafe Imaging. Tips & Tricks. CT Working Group. Optimization of scan length to reduce CT radiation dose Ask EuroSafe Imaging Tips & Tricks CT Working Group Optimization of scan length to reduce CT radiation dose Alban Gervaise (Centre Hospitalier Universitaire Nancy, FR) Mika Kortesniemi (HUS Medical Imaging

More information

Vascular CT Protocols

Vascular CT Protocols Vascular CT Protocols V 1D: Chest and abdominal CT angiogram (aortic dissection protocol) V 1T: Chest CT angiogram (aortic trauma protocol) V 2: Abdominal and pelvis CT angiogram (aortic aneurysm protocol)

More information

FDG-18 PET/CT - radiation dose and dose-reduction strategy

FDG-18 PET/CT - radiation dose and dose-reduction strategy FDG-18 PET/CT - radiation dose and dose-reduction strategy Poster No.: C-1856 Congress: ECR 2014 Type: Authors: Keywords: DOI: Scientific Exhibit P. Nicholson, S. McSweeney, K. O'Regan; Cork/IE Radiation

More information

ESTABLISHING DRLs in PEDIATRIC CT. Keith Strauss, MSc, FAAPM, FACR Cincinnati Children s Hospital University of Cincinnati College of Medicine

ESTABLISHING DRLs in PEDIATRIC CT. Keith Strauss, MSc, FAAPM, FACR Cincinnati Children s Hospital University of Cincinnati College of Medicine ESTABLISHING DRLs in PEDIATRIC CT Keith Strauss, MSc, FAAPM, FACR Cincinnati Children s Hospital University of Cincinnati College of Medicine CT Dose Indices CTDI INTRODUCTION CTDI 100, CTDI w, CTDI vol

More information

Update on Acute Aortic Syndrome

Update on Acute Aortic Syndrome SUNDAY Update on Acute Aortic Syndrome Diana Litmanovich, MD Learning objectives To be familiar with the definition, natural history, and imaging findings of acute aortic syndrome, including: I. Aortic

More information

Triple Rule-out using 320-row-detector volume MDCT: A comparison of the wide volume and helical modes

Triple Rule-out using 320-row-detector volume MDCT: A comparison of the wide volume and helical modes Triple Rule-out using 320-row-detector volume MDCT: A comparison of the wide volume and helical modes Poster No.: C-0488 Congress: ECR 2012 Type: Authors: Keywords: DOI: Scientific Exhibit E.-J. Kang,

More information

Radiation related cancer risk & benefit/risk assessment for screening procedures

Radiation related cancer risk & benefit/risk assessment for screening procedures WHO Workshop on Justification of CT for IHA 15-17 Oct 2014 Radiation related cancer risk & benefit/risk assessment for screening procedures Elke A. Nekolla BfS Federal Office for Radiation Protection Radiation

More information

CT angiography techniques. Boot camp

CT angiography techniques. Boot camp CT angiography techniques Boot camp Overview Basic concepts Contrast administration arterial opacification Time scan acquisition during the arterial phase Protocol examples Helical non-gated CTA Pulmonary

More information

Ultralow Dose Chest CT with MBIR

Ultralow Dose Chest CT with MBIR Ultralow Dose Chest CT with MBIR Ella A. Kazerooni, M.D. Professor & Director Cardiothoracic Radiology Associate Chair for Clinical Affairs University of Michigan Disclosures Consultant: GE Healthcare

More information

Radiation Dosimetry for CT Protocols

Radiation Dosimetry for CT Protocols Radiation Dosimetry for CT Protocols This document contains radiation dosimetry information from CT scans and can be used by investigators to estimate the dosimetry information required by the JRSC or

More information

To Shield or Not to Shield? Lincoln L. Berland, M.D.

To Shield or Not to Shield? Lincoln L. Berland, M.D. To Shield or Not to Shield? Lincoln L. Berland, M.D. Disclosures Consultant to: Nuance, Inc. Page 2 Breast Radiation on CT Use of chest CT has increased in women vulnerable to cancer induction by radiation.

More information

Automated CT Protocol Design Advantages and Pitfalls of Algorithm-Based Technique Selection in Pediatrics. Disclosures 7/22/2014. Learning Objectives

Automated CT Protocol Design Advantages and Pitfalls of Algorithm-Based Technique Selection in Pediatrics. Disclosures 7/22/2014. Learning Objectives Automated CT Protocol Design Advantages and Pitfalls of Algorithm-Based Technique Selection in Pediatrics Robert MacDougall, M.Sc. Department of Radiology Boston Children s Hospital Disclosures 2 Learning

More information

Abdomen and Pelvis CT (1) By the end of the lecture students should be able to:

Abdomen and Pelvis CT (1) By the end of the lecture students should be able to: RAD 451 Abdomen and Pelvis CT (1) By the end of the lecture students should be able to: State the common indications for Abdomen and pelvis CT exams Identify possible contra indications for Abdomen and

More information

Radiation Dose Reduction: Should You Use a Bismuth Breast Shield?

Radiation Dose Reduction: Should You Use a Bismuth Breast Shield? Radiation Dose Reduction: Should You Use a Bismuth Breast Shield? Lincoln L. Berland, M.D., F.A.C.R. Michael V. Yester, Ph.D. University of Alabama at Birmingham Breast Radiation on CT Use of chest CT

More information

CT Perfusion. U. Joseph Schoepf, MD, FAHA, FSCBT MR, FSCCT Professor of Radiology, Medicine, and Pediatrics Director of Cardiovascular Imaging

CT Perfusion. U. Joseph Schoepf, MD, FAHA, FSCBT MR, FSCCT Professor of Radiology, Medicine, and Pediatrics Director of Cardiovascular Imaging CT Perfusion U. Joseph Schoepf, MD, FAHA, FSCBT MR, FSCCT Professor of Radiology, Medicine, and Pediatrics Director of Cardiovascular Imaging Disclosures Consultant for / research support from Bayer Bracco

More information

Abdominal Ultrasound

Abdominal Ultrasound Abdominal Ultrasound What is Ultrasound Imaging of the Abdomen? What are some common uses of the procedure? How should I prepare? What does the equipment look like? How does the procedure work? How is

More information

Ct angiography, icd-10

Ct angiography, icd-10 Ct angiography, icd-10 The Borg System is 100 % Ct angiography, icd-10 Head and Neck. BW29 Head and Neck. BW290 High Osmolar. BW2900 Unenhanced and Enhanced. BW2900Z Computerized Tomography (CT Scan) of

More information

IOWA RADIOLOGY 1. Guide to CT Scans Clive Downtown Des Moines

IOWA RADIOLOGY 1. Guide to CT Scans Clive Downtown Des Moines IOWA RADIOLOGY 1 Guide to CT Scans 515-226-9810 Clive Downtown Des Moines Table of Contents IOWA RADIOLOGY 2 What is CT?... 3.Why have a CT scan?... 4 What are the risks of CT scanning?... 5 Ionizing Radiation...

More information

Cardiac CTA Prospective Gating Broad Beam

Cardiac CTA Prospective Gating Broad Beam Cardiac CTA Prospective Gating Broad Beam ACQUISITION- Broad Beam Gating: Prospective Non Contrast Scan-Calcium Score Patient Position Supine Feet First into Gantry Heart Isocenter Scanogram AP and Lateral

More information

Gender differences in CT calcium scoring: A phantom study

Gender differences in CT calcium scoring: A phantom study Gender differences in CT calcium scoring: A phantom study Nicholas Petrick, Qin Li, Benjamin Berman, Marios A Gavrielides, Rongping Zeng, Berkman Sahiner CDRH/OSEL/DIDSR U.S. Food and Drug Administration

More information

Dual Energy CT of the Heart: Perfusion and Beyond

Dual Energy CT of the Heart: Perfusion and Beyond Dual Energy CT of the Heart: Perfusion and Beyond U. Joseph Schoepf, MD, FAHA, FSCBT MR, FSCCT Professor of Radiology, Medicine, and Pediatrics Director of Cardiovascular Imaging Disclosures Consultant

More information

8/18/2011. Acknowledgements. Managing Pediatric CT Patient Doses INTRODUCTION

8/18/2011. Acknowledgements. Managing Pediatric CT Patient Doses INTRODUCTION Managing Pediatric CT Patient Doses Keith J. Strauss, MSc, FAAPM, FACR President X-Ray Computations, Inc. Boston, Massachusetts Acknowledgements Marilyn Goske, MD John Boone, PhD Cynthia McCollough, PhD

More information

CT Guided Procedures And Interesting Cases. Stephen Kim, MD Diagnostic and Interventional Radiology

CT Guided Procedures And Interesting Cases. Stephen Kim, MD Diagnostic and Interventional Radiology CT Guided Procedures And Interesting Cases Stephen Kim, MD Diagnostic and Interventional Radiology CT guided procedure benefits Precise lesion targeting Clear image guidance for needle placement Immediate

More information

An abdominal ultrasound produces a picture of the organs and other structures in the upper abdomen.

An abdominal ultrasound produces a picture of the organs and other structures in the upper abdomen. Scan for mobile link. Ultrasound - Abdomen Ultrasound imaging of the abdomen uses sound waves to produce pictures of the structures within the upper abdomen. It is used to help diagnose pain or distention

More information

Children's (Pediatric) Ultrasound - Abdomen

Children's (Pediatric) Ultrasound - Abdomen Scan for mobile link. Children's (Pediatric) Ultrasound - Abdomen Children s (pediatric) ultrasound imaging of the abdomen is a safe, noninvasive test that uses sound waves to produce a clear picture of

More information

CT Urography. Bladder. Stuart G. Silverman, M.D.

CT Urography. Bladder. Stuart G. Silverman, M.D. CT Urography Stuart G. Silverman, M.D. Professor of Radiology Harvard Medical School Director, Abdominal Imaging and Intervention Brigham and Women s Hospital Bladder Boston, MA CT Urography Stuart G.

More information

Aorta ct w runoff The Borg System is 100 % Retrievable & Reusable Aorta ct w runoff

Aorta ct w runoff The Borg System is 100 % Retrievable & Reusable Aorta ct w runoff Aorta ct w runoff The Borg System is 100 % Aorta ct w runoff Sep 5, 2016. CT images demonstrated extensive atherosclerotic soft mural and calcified plaques, involving the abdominal aorta, the major lower

More information

Adopting DAP as a dose metric in CT

Adopting DAP as a dose metric in CT Adopting DAP as a dose metric in CT Nick Weir Department of Medical Physics Royal Infirmary of Edinburgh NHS Lothian Dose Area Product (DAP) in CT Hypothesis: There are advantages to using DAP: (i) In

More information

Disclosure Information

Disclosure Information Coronary CTA Pearls and Pitfalls Ricardo C. Cury, MD, FSCCT, FAHA, FACC Chairman of Radiology Radiology Associates of South Florida Director of Cardiac Imaging Miami Cardiac and Vascular Institute Past-President

More information

Automatic Patient Centering for MDCT: Effect on Radiation Dose

Automatic Patient Centering for MDCT: Effect on Radiation Dose Patient Centering for MDCT CT Imaging Original Research Jianhai Li 1 Unni K. Udayasankar 1 Thomas L. Toth 2 John Seamans 2 William C. Small 1 Mannudeep K. Kalra 1,3 Li J, Udayasankar UK, Toth TL, Seamans

More information

AIM 2014 CPT Radiology & Cardiac Codes Requiring Review

AIM 2014 CPT Radiology & Cardiac Codes Requiring Review AIM 2014 CPT Radiology & Cardiac Codes Requiring Review Modality Body Part CT Head 1 70480 CT orbit, sella or posterior fossa; w/o contrast 1 CT Head 1 70481 CT orbit, sella or posterior fossa; with CT

More information

Debra Pennington, MD Director of Imaging Dell Children s Medical Center

Debra Pennington, MD Director of Imaging Dell Children s Medical Center Debra Pennington, MD Director of Imaging Dell Children s Medical Center 1 Gray (Gy) is 1 J of radiation energy/ 1 kg matter (physical quantity absorbed dose) Diagnostic imaging doses in mgy (.001 Gy)

More information

L. Alexandre Frigini MD; Aaron Thomas, MD; Veronica Lenge de Rosen, MD

L. Alexandre Frigini MD; Aaron Thomas, MD; Veronica Lenge de Rosen, MD Computed Tomography Urography (CTU) for Evaluation of Asymptomatic microscopic hematuria. Is intravenous contrast administration warranted for all patients? A retrospective evaluation utilizing ACR s Appropriateness

More information

A study on CT pulmonary angiography at low kv and low-concentration contrast medium using iterative reconstruction.

A study on CT pulmonary angiography at low kv and low-concentration contrast medium using iterative reconstruction. Biomedical Research 2017; 28 (17): 7683-7687 ISSN 0970-938X www.biomedres.info A study on CT pulmonary angiography at low kv and low-concentration contrast medium using iterative reconstruction. Yanhe

More information

Cardiac CT - Coronary Calcium Basics Workshop II (Basic)

Cardiac CT - Coronary Calcium Basics Workshop II (Basic) Cardiac CT - Coronary Calcium Basics Workshop II (Basic) J. Jeffrey Carr, MD, MSCE Dept. of Radiology & Public Health Sciences Wake Forest University School of Medicine Winston-Salem, NC USA No significant

More information

2012 CPT Radiology Codes Requiring Review Blue Cross and Blue Shield of Louisiana

2012 CPT Radiology Codes Requiring Review Blue Cross and Blue Shield of Louisiana 2012 CPT Radiology Codes Requiring Review Blue Cross and Blue Shield of Louisiana CT Head 70480 CT orbit, sella or posterior fossa; w/o CT Head 70481 CT orbit, sella or posterior fossa; with CT Head 70482

More information

With increasing use of computed tomography (CT) in modern medicine, concerns have arisen regarding increasing radiation dose to the community from med

With increasing use of computed tomography (CT) in modern medicine, concerns have arisen regarding increasing radiation dose to the community from med Note: This copy is for your personal non-commercial use only. To order presentation-ready copies for distribution to your colleagues or clients, contact us at www.rsna.org/rsnarights. ORIGINAL RESEARCH

More information

Computed Tomography (CT) - Chest

Computed Tomography (CT) - Chest Scan for mobile link. Computed Tomography (CT) - Chest What is CT Scanning of the Chest? Computed tomography, more commonly known as a CT or CAT scan, is a diagnostic medical test that, like traditional

More information

Computed Tomography (CT) - Chest

Computed Tomography (CT) - Chest Scan for mobile link. Computed Tomography (CT) - Chest Computed tomography (CT) of the chest uses special x-ray equipment to examine abnormalities found in other imaging tests and to help diagnose the

More information

Computed tomography Acceptance testing and dose measurements

Computed tomography Acceptance testing and dose measurements Computed tomography Acceptance testing and dose measurements Jonas Andersson Medical Physicist, Ph.D. Department of Radiation Sciences University Hospital of Norrland, Umeå Sweden Contents The Computed

More information

Studies in both the United States and Europe have revealed that computed tomographic (CT) examinations account for only up to 15% of all imaging exami

Studies in both the United States and Europe have revealed that computed tomographic (CT) examinations account for only up to 15% of all imaging exami Note: This copy is for your personal non-commercial use only. To order presentation-ready copies for distribution to your colleagues or clients, contact us at www.rsna.org/rsnarights. Alice B. Smith, MD

More information

Ionizing Radiation Exposure of the Population of the United States. David A. Schauer Executive Director

Ionizing Radiation Exposure of the Population of the United States. David A. Schauer Executive Director Ionizing Radiation Exposure of the Population of the United States David A. Schauer Executive Director Key Dates in NCRP s s History 1929: U.S. Advisory Committee on X-ray and Radium Protection 1946: U.S.

More information

Ask EuroSafe Imaging. Tips & Tricks. CT Working Group

Ask EuroSafe Imaging. Tips & Tricks. CT Working Group Ask EuroSafe Imaging Tips & Tricks CT Working Group The use of bi-phase injection protocols to reduce the number of acquisition phases and radiation dose Alban Gervaise (Medical Imaging Department, HIA

More information

Diagnostic and Prognostic Value of Coronary Ca Score

Diagnostic and Prognostic Value of Coronary Ca Score Diagnostic and Prognostic Value of Coronary Ca Score Dr. Ghormallah Alzahrani Cardiac imaging division, Adult Cardiology department Prince Sultan Cardiac Center ( PSCC) Madina, June 2 Coronary Calcium

More information

CLINICAL PRESENTATION AND RADIOLOGY QUIZ QUESTION

CLINICAL PRESENTATION AND RADIOLOGY QUIZ QUESTION Donald L. Renfrew, MD Radiology Associates of the Fox Valley, 333 N. Commercial Street, Suite 100, Neenah, WI 54956 6/23/2012 Radiology Quiz of the Week # 78 Page 1 CLINICAL PRESENTATION AND RADIOLOGY

More information

Utilization Status of SCENARIA at the Diagnostic Imaging Center and Breast Center. Koutarou Takahashi MEDIX VOL. 61 P.4 P.7

Utilization Status of SCENARIA at the Diagnostic Imaging Center and Breast Center. Koutarou Takahashi MEDIX VOL. 61 P.4 P.7 Utilization Status of SCENARIA at the Diagnostic Imaging Center and Breast Center Koutarou Takahashi MEDIX VOL. 61 P.4 P.7 Utilization Status of SCENARIA at the Diagnostic Imaging Center and Breast Center

More information

Patient doses from X-ray computed tomography examinations by a single-array detector unit: Axial versus spiral mode

Patient doses from X-ray computed tomography examinations by a single-array detector unit: Axial versus spiral mode Patient doses from X-ray computed tomography examinations by a single-array detector unit: Axial versus spiral mode S.M. Ghavami 1, A. Mesbahi 2,3*, I. Pesianian 1 Iran. J. Radiat. Res., 2012; 10(2): 89-94

More information

Dual Energy CT of the Liver

Dual Energy CT of the Liver 34th Annual Course October 2011 Washington, DC Dual Energy CT of the Liver Vassilios Raptopoulos, MD Beth Israel Deaconess Medical Center Harvard Medical School Dual Energy CT (DECT) Different materials

More information

X-Ray & CT Physics / Clinical CT

X-Ray & CT Physics / Clinical CT Computed Tomography-Basic Principles and Good Practice X-Ray & CT Physics / Clinical CT INSTRUCTORS: Dane Franklin, MBA, RT (R) (CT) Office hours will be Tuesdays from 5pm to 6pm CLASSROOM: TIME: REQUIRED

More information

ECG Gated CT Aorta in Transcatheter Aortic Valve Implantation

ECG Gated CT Aorta in Transcatheter Aortic Valve Implantation ECG Gated CT Aorta in Transcatheter Aortic Valve Implantation Poster No.: C-2014 Congress: ECR 2014 Type: Educational Exhibit Authors: M. A. Ottesen; Oslo/NO Keywords: Cardiac, Arteries / Aorta, CT, CT-Angiography,

More information

Medical Physics and Informatics Original Research

Medical Physics and Informatics Original Research Medical Physics and Informatics Original Research Sagara et al. Abdominal CT With Low Versus Routine Dose Medical Physics and Informatics Original Research Yoshiko Sagara 1 Amy K. Hara 2 William Pavlicek

More information

CT Contrast Protocols for Different Organ Imaging

CT Contrast Protocols for Different Organ Imaging CT Contrast Protocols for Different Organ Imaging g Paul Shreve, M.D. Advanced Radiology Services, P.C. & Spectrum Health Grand Rapids, MI, USA Correlative Imaging Council Society of Nuclear Medicine 56

More information

MOLINA HEALTHCARE OF MICHIGAN PRIOR AUTHORIZATION / PRE-SERVICE REVIEW GUIDE IMAGING CODES REQUIRING PRIOR AUTHORIZATION EFFECTIVE 1/1/2014

MOLINA HEALTHCARE OF MICHIGAN PRIOR AUTHORIZATION / PRE-SERVICE REVIEW GUIDE IMAGING CODES REQUIRING PRIOR AUTHORIZATION EFFECTIVE 1/1/2014 70336 MRI MRI, temporomandibular joint(s) 70450 CT/CTA CT, head or brain; without contrast material 70460 CT/CTA CT, head or brain; with contrast material(s) 70470 CT/CTA CT, head or brain; without contrast

More information

Dose Reduction Options in Cardiac CT

Dose Reduction Options in Cardiac CT Dose Reduction Options in Cardiac CT Doyle P, Ball P*, Donnelly P # Radiological Sciences & Imaging, Forster Green Hospital *Department of Radiology, Ulster Hospital # Department of Cardiology, Ulster

More information

03/01/17. Table of Contents GENERAL CT GUIDELINES... 3 ORAL CONTRAST... 3 RECTAL CONTRAST... 5 VAGINAL CONTRAST... 5

03/01/17. Table of Contents GENERAL CT GUIDELINES... 3 ORAL CONTRAST... 3 RECTAL CONTRAST... 5 VAGINAL CONTRAST... 5 03/01/17 Table of Contents GENERAL CT GUIDELINES... 3 ORAL CONTRAST... 3 RECTAL CONTRAST... 5 VAGINAL CONTRAST... 5 ROUTINE ABDOMEN/PELVIS... 6 ABDOMEN/PELVIS with DELAY... 7 NON CONTRAST ABDOMEN/PELVIS...

More information

BlueAdvantage SM. & BlueChoice SM Radiology Prior Authorization Program Code List CPT /HCPS

BlueAdvantage SM. & BlueChoice SM Radiology Prior Authorization Program Code List CPT /HCPS BlueAdvantage SM & BlueChoice SM Radiology Prior Authorization Program Code List CPT /HCPS 70336 MRI TMJ 70450 CT Head Without Contrast 70460 CT Head With Contrast 70470 CT Head Without & With Contrast

More information

Clinical Image Gallery Next Generation Volume 1

Clinical Image Gallery Next Generation Volume 1 Clinical Image Gallery Next Generation Volume 1 Dr. Russell Bull Royal Bournemouth Hospital, Bournemouth, United Kingdom After long experience with the first generation, a next generation Aquilion ONE

More information

Vascular and Interventional Radiology Original Research

Vascular and Interventional Radiology Original Research Vascular and Interventional Radiology Original Research Apfaltrer et al. High-Pitch Versus Standard-Pitch CTA of the Aorta Vascular and Interventional Radiology Original Research Paul Apfaltrer 1,2 E.

More information

screening; including image post processing CT, heart; without contrast material; with Requires authorization

screening; including image post processing CT, heart; without contrast material; with Requires authorization 0042T Cerebral perfusion analysis using CT; with ; including of parametric maps with determination of cerebral blood flow, cerebral blood volume, and mean transit time 74263 Computed tomographic (CT) colonography,

More information

Case Report Three-Dimensional Dual-Energy Computed Tomography for Enhancing Stone/Stent Contrasting and Stone Visualization in Urolithiasis

Case Report Three-Dimensional Dual-Energy Computed Tomography for Enhancing Stone/Stent Contrasting and Stone Visualization in Urolithiasis Case Reports in Urology Volume 2013, Article ID 646087, 4 pages http://dx.doi.org/10.1155/2013/646087 Case Report Three-Dimensional Dual-Energy Computed Tomography for Enhancing Stone/Stent Contrasting

More information

3/5/2015. Don t Electrocute Me!: Common Misconceptions in Imaging and Radiation Safety (and What to Do About Them)

3/5/2015. Don t Electrocute Me!: Common Misconceptions in Imaging and Radiation Safety (and What to Do About Them) Don t Electrocute Me!: Common Misconceptions in Imaging and Radiation Safety (and What to Do About Them) Rebecca Milman Marsh, Ph.D. University of Colorado Department of Radiology Who in the Facility Works

More information

CT scan chest and upper abdomen

CT scan chest and upper abdomen CT scan chest and upper abdomen Respiratory Unit Patient Information Leaflet Introduction This leaflet gives general information for people having a CT scan (CT stands for computerised tomography). It

More information

Computed Tomography (CT) - Body

Computed Tomography (CT) - Body Computed Tomography (CT) - Body What is CT Scanning of the Body? CT scanning sometimes called CAT scanning is a noninvasive medical test that helps physicians diagnose and treat medical conditions. CT

More information

Five Views of Transitional Cell Carcinoma: One Man s Journey

Five Views of Transitional Cell Carcinoma: One Man s Journey September 2006 Five Views of Transitional Cell Carcinoma: One Man s Journey Amsalu Dabela, Harvard Medical School III Outline Overview: Renal Anatomy Our Patient s Story Diagnostic Imaging Studies Appearance

More information

Shielding Calculation: Radiographic Room. Jerry Williams

Shielding Calculation: Radiographic Room. Jerry Williams Shielding Calculation: Radiographic Room Jerry Williams What you need to know Room use and layout DAP workload DAP averaged kv Distance to barrier Construction details Walls Ceilings/ floors Surrounding

More information

Patient / Organ Dose in CT

Patient / Organ Dose in CT Patient / Organ Dose in CT Patient specific and organ dose estimation H.D. Nagel Dr. HD Nagel, Science & Technology for Radiology Buchholz / Germany www.sascrad.com 1 Topics CTDI & patient dose SSDE Organ

More information

Exploration the Method of Low Dose Coronary Artery Imaging with Dual-Source CT

Exploration the Method of Low Dose Coronary Artery Imaging with Dual-Source CT Journal of Biosciences and Medicines, 2013, 1, 6-10 doi:10.4236/jbm.2013.11002 Published Online February 2013 (http://www.scirp.org/journal/jbm/) Exploration the Method of Low Dose Coronary Artery Imaging

More information

CT Head Dose Reduction Using Spiral Scanning Protocol

CT Head Dose Reduction Using Spiral Scanning Protocol CT Head Dose Reduction Using Spiral Scanning Protocol Reed, William J MD; Broderick, Daniel F, MD; Weindling, Steven M, MD; Czervionke, Leo F MD; and Morin, Richard L; PhD; Mayo Clinic, Department of Radiology;

More information

Varian Edge Experience. Jinkoo Kim, Ph.D Henry Ford Health System

Varian Edge Experience. Jinkoo Kim, Ph.D Henry Ford Health System Varian Edge Experience Jinkoo Kim, Ph.D Henry Ford Health System Disclosures I participate in research funded by Varian Medical Systems. Outline of Presentation Review advanced imaging in Varian Edge Linear

More information

Aquilion ONE: Pediatric Imaging. Richard Mather, PhD. Senior Manager, CT Clinical Science Toshiba America Medical Systems, Inc.

Aquilion ONE: Pediatric Imaging. Richard Mather, PhD. Senior Manager, CT Clinical Science Toshiba America Medical Systems, Inc. Aquilion ONE: Pediatric Imaging Richard Mather, PhD Senior Manager, CT Clinical Science Toshiba America Medical Systems, Inc. The use of CT in pediatric diagnostic procedures has increased significantly

More information

Pediatric CT Protocols (18 years old or less)

Pediatric CT Protocols (18 years old or less) Pediatric CT Protocols (18 years old or less) Ped1: Head CT Ped2: Cervical spine CT Ped3: Sinus CT Ped4: Neck CT Ped5: Chest CT Ped6: Abdomen and pelvis CT Ped7: Thoracic or lumbar spine CT Ped8: Extremity

More information

AUA Guidelines for Imaging Known or Suspected Ureteral Calculi. Michael Ferrandino, MD Assoc Professor of Urology Duke University Medical Center

AUA Guidelines for Imaging Known or Suspected Ureteral Calculi. Michael Ferrandino, MD Assoc Professor of Urology Duke University Medical Center AUA Guidelines for Imaging Known or Suspected Ureteral Calculi Michael Ferrandino, MD Assoc Professor of Urology Duke University Medical Center Imaging for Urolithiasis Justification for the Guidelines

More information

Managing the imaging dose during Image-guided Radiotherapy. Martin J Murphy PhD Department of Radiation Oncology Virginia Commonwealth University

Managing the imaging dose during Image-guided Radiotherapy. Martin J Murphy PhD Department of Radiation Oncology Virginia Commonwealth University Managing the imaging dose during Image-guided Radiotherapy Martin J Murphy PhD Department of Radiation Oncology Virginia Commonwealth University Radiographic image guidance has emerged as the new paradigm

More information

Effective Utilization of Imaging. John V. Roberts, M.D. Premier Radiology Abdominal Imaging

Effective Utilization of Imaging. John V. Roberts, M.D. Premier Radiology Abdominal Imaging Effective Utilization of Imaging John V. Roberts, M.D. Premier Radiology Abdominal Imaging Safety Contrast and Radiation What to order Abdomen/Pelvis Brain/Spine Chest Musculoskeletal Ob/Gyn Head and Neck

More information

Radiology Codes Requiring Authorization*

Radiology Codes Requiring Authorization* 70336 Magnetic resonance (eg, proton) imaging, temporomandibular joint(s) 70450 Computed tomography, head or brain; without contrast material 70460 Computed tomography, head or brain; with contrast material(s)

More information

Liver imaging takes a step forward with Ingenia

Liver imaging takes a step forward with Ingenia Publication for the Philips MRI Community ISSUE 49 2013 / 2 Liver imaging takes a step forward with Ingenia Lyon South Hospital strives to move from several studies first CT, then MR or PET to using just

More information

The radiation dose in retrospective

The radiation dose in retrospective The radiation dose in retrospective gated tdcoronary computed td tomography (CCT) Saeed AL Ahmari, Ghormallah AL Zahrani, Sumiah AL Helali, Samir AL Dulikan, Abdullah Bafagih, HibaKhashojji Prince Sultan

More information

Recommendations for cross-sectional imaging in cancer management, Second edition

Recommendations for cross-sectional imaging in cancer management, Second edition www.rcr.ac.uk Recommendations for cross-sectional imaging in cancer management, Second edition Renal and adrenal tumours Faculty of Clinical Radiology www.rcr.ac.uk Contents Renal cell carcinoma 3 Clinical

More information

Innovations in CT Dose Reduction Strategy: Application of the Adaptive Statistical Iterative Reconstruction Algorithm

Innovations in CT Dose Reduction Strategy: Application of the Adaptive Statistical Iterative Reconstruction Algorithm Medical Physics and Informatics Pictorial Essay Silva et al. T Dose Reduction Medical Physics and Informatics Pictorial Essay Downloaded from www.ajronline.org by 46.3.203.191 on 12/18/17 from IP address

More information

CT Colonography (Virtual Colonoscopy) Patient information

CT Colonography (Virtual Colonoscopy) Patient information CT Colonography (Virtual Colonoscopy) Patient information CT colonography is a way of looking inside your bowel and abdomen. This information explains how it is done, what to expect, and the risks involved.

More information

Contrast Enhanced Spectral Mammography (CESM) Updates

Contrast Enhanced Spectral Mammography (CESM) Updates Contrast Enhanced Spectral Mammography (CESM) Updates Georgeta Mihai, PhD, DABR Medical Physicist, BIDMC, Boston Assistant Professor, Harvard Medical School, Boston Disclosures None Acknowledgments: Da

More information

Protocols in Cardiac CT Dr. Bruce Precious Dalhousie University Friday, April 15, 2016

Protocols in Cardiac CT Dr. Bruce Precious Dalhousie University Friday, April 15, 2016 Protocols in Cardiac CT Dr. Bruce Precious Dalhousie University Friday, April 15, 2016 Disclosure Statement: No Conflict of Interest I do not have an affiliation, financial or otherwise, with a pharmaceutical

More information

CHEST CT PROTOCOL FOR MULTIPLE DETECTOR ROW SCANNERS

CHEST CT PROTOCOL FOR MULTIPLE DETECTOR ROW SCANNERS 1. Standard ed 2. Standard ed & Abdomen 3. Standard ed, Abdomen, & Pelvis 4. Aortic Dissection arch dome thru adrenals apex arch + 2 arch dome thru abdomen apex arch + 2 arch dome to crests apex arch +

More information

CT Colonography. What is CT Colonography?

CT Colonography. What is CT Colonography? Scan for mobile link. CT Colonography Computed tomography (CT) colonography or virtual colonoscopy uses special x-ray equipment to examine the large intestine for cancer and growths called polyps. During

More information

Imaging Patient Education. Magnetic Resonance Imaging (MRI)

Imaging Patient Education. Magnetic Resonance Imaging (MRI) Magnetic Resonance Imaging (MRI) What you should know about your Body MRI exam: Purpose: Magnetic Resonance Imaging (MRI) uses radio waves and a strong magnetic field to provide clear and detailed images

More information

Computed Tomography (CT) - Abdomen and Pelvis

Computed Tomography (CT) - Abdomen and Pelvis Scan for mobile link. Computed Tomography (CT) - Abdomen and Pelvis Computed tomography (CT) of the abdomen and pelvis is a diagnostic imaging test used to help detect diseases of the small bowel, colon

More information

Non Contrast MRA. Mayil Krishnam. Director, Cardiovascular and Thoracic Imaging University of California, Irvine

Non Contrast MRA. Mayil Krishnam. Director, Cardiovascular and Thoracic Imaging University of California, Irvine Non Contrast MRA Mayil Krishnam Director, Cardiovascular and Thoracic Imaging University of California, Irvine No disclosures Non contrast MRA-Why? Limitations of CTA Radiation exposure Iodinated contrast

More information

Urinary Stone Disease: Comparison of Standard-Dose and Low-Dose with 4D MDCT Tube Current Modulation

Urinary Stone Disease: Comparison of Standard-Dose and Low-Dose with 4D MDCT Tube Current Modulation MDCT of Urinary Stone Disease Genitourinary Imaging Original Research Tom H. Mulkens 1 Sofie Daineffe 1 Roel De Wijngaert 1 Patrick Bellinck 1 André Leonard 2 Guido Smet 2 Jean-Luc Termote 1 Mulkens TH,

More information

PICTORIAL ESSAY. Experiences of using a single post-contrast CT scan of the urinary tract after triphasic contrast injection

PICTORIAL ESSAY. Experiences of using a single post-contrast CT scan of the urinary tract after triphasic contrast injection Experiences of using a single post-contrast CT scan of the urinary tract after triphasic contrast injection P C Pretorius, FCRad (Diag) SA Drs Visser, Erasmus, Vawda & Partners, Port Elizabeth Corresponding

More information

Abdominal Ultrasound. Diane Hallinen, MD. Bloodroot

Abdominal Ultrasound. Diane Hallinen, MD. Bloodroot Abdominal Ultrasound Diane Hallinen, MD Bloodroot Abdominal Ultrasound Vasculature Hepatobiliary Spleen Kidney Bladder Bowel Where to put the probe? Vasculature We are going to talk about Celiac Trunk

More information