A multicentric study on patient dose in multislice CT
|
|
|
- Augustus McKenzie
- 6 years ago
- Views:
Transcription
1 A multicentric study on patient dose in multislice CT A.Stratis 1, M.Molfetas 1, S.Kottou 2, A.Louizi 2 1. Medical Physics department, Evangelismos General hospital of Athens, Athens, Greece 2. Medical Physics lab, School of Medicine, University of Athens, Athens, Greece Presenting author: stratisandrew@yahoo.gr 1
2 Purpose 1. Estimate the radiation dose delivered to patients for the most common CT practices in terms of CTDIvol and DLP for multislice CT scanners 2. Investigate the dose distribution of the same practice in different centers 3. Compare scanners in terms of radiation dose 4. Compare and third quartile values with the most recently published DRLs in NRPB W
3 Method 16 scanners (in 14 centers) were divided into 4 groups (single, dual, 4 and 8+ slices) Data was collected for head, abdomen, thorax and pelvis examinations for 1400 patients between September 2009 and April Mean and third quartile values of kv, pitch, slice and image thickness, scan length, CTDIvol and DLP were calculated for each exam and group and compared with the DRLs. 3
4 Results Table 1: Radiation dose delivered to patients for the most common CT practices Mean ± SD of all exams (1400 patients) Exam Head base (post fossa) Head (cerebrum) Abdomen thorax (lungs) thorax (HR) Pelvis Number of patients Mean CTDIvol (all exams) SD (all exams) % CV
5 Results - Table 2: CTDIvol, DLP and the respective NRPB DRL values for the most common CT practices Scanner group value Head base (post fossa) Head (cerebrum) Abdomen 57,8 ± 12,9 310 ± 54 62,6 ± 4,8 614 ± 65 19,2 ± 7,2 734 ± 451 Single slice NRPB 54 64, , , , , ,6 NRPB ,5 ± 22,1 618 ± ,8 ± ± 64 18,1 ± 7,4 619 ± 216 Dual slice NRPB 48 53, , , ,5 9,8 21, ,9 NRPB ,1 ± 36,1 511 ± ,7 ± 41,5 540 ± ± 10,6 633 ± slice NRPB , , , , ,0 NRPB ,1 ± 27,7 755 ± ,4 ± 4,3 470 ± 73 18,6 ± 6,3 982 ± slice NRPB 97 89, , , , , ,0 NRPB
6 Results Table 3: CTDIvol, DLP and the respective NRPB DRL values for the most common CT practices Scanner group value Thorax (lungs) Thorax (HR) Pelvis 10,7 ± 6,4 394 ± 255 2,9 ± 0,7 34 ± 43 13,9 ± 4,5 420 ± 187 Single slice NRPB 8 12, ,0 2,2 3, , , ,0 NRPB ,3 ± 2,9 338 ± 88 15,8 ± 1,7 205 ± ,3 ± ± 234 Dual slice NRPB 7,9 15, ,6 1,8 16, , , ,0 NRPB 8, , ± 11,1 586 ± ± 5,2 192 ± ,1 ± 8,7 723 ± slice NRPB 10 24, ,2 5,2 7, , , ,9 NRPB , ,4 ± 11,1 477 ± ,7 ± 10,6 460 ± ,8 ± ± slice NRPB 11 13, ,1 5,3 19, , , ,8 NRPB ,
7 Results - Table 4: Dose distribution of the same practice in different centers Mean CT scanner Scanner group Head base (post fossa) Head (cerebrum) Abdomen thorax (lungs) thorax (HR) Pelvis CT No 1 44,4 19,1 6,5 3,5 19,1 CT No 2 CT No 3 Single slice 59,2 70,0 59,2 66,0 28,4 18,8 6,7 20,0 2,9 2,1 11,3 CT No 4 10,7 9,4 11,4 CT No 5 59,5 18,2 14,6 14,6 25,5 CT No 6 Dual slice 48,2 71,6 10,6 11,3 CT No 7 16,8 56,0 25,4 17,0 17,0 17,0 CT No 8 63,8 109,0 12,0 8,6 37,3 CT No 9 CT No 10 4 slice 46,8 125,0 50,3 12,5 34,7 6,8 29,7 2,3 9,6 CT No ,0 20,9 23,0 25,0 CT No 12 (6-slice) 70,8 13,68 13,17 13,68 CT No 13 (16-slice) 67, ,48 1,69 14 CT No 14 (16-slice) 8+ slice 125,1 28,3 3,5 17,6 28,3 CT No 15 (64-slice) 53,3 53,3 15,4 7,7 15,4 CT No 16 (128-slice) 89,2 59,4 21,9 32,3 21,9 7
8 Conclusions Table 1 shows the radiation dose in terms of CTDIvol for all patients who underwent the same examination in all CT modalities. Tables 2 and 3 show patient radiation dose in terms of and 3 rd quartile CTDIvol and DLP values and compare them with the recently published DRLs in NRPB W67 taking into account the scanner group. Table 4 shows the patient dose fluctuation for the same exam in different scanners. When CTDIvol values for the 24 cases (4 scanner groups x 6 exams) are compared with NRPB W67 DRLs, the dose delivered to patients is higher in 20 cases (83.3%), whereas 3 rd quartile values are higher than the respective DRLs in 22 cases (91.6%). Mean DLP values are higher than DRLs in 22 cases (91.6%) whereas 3 rd quartile values are higher than the respective DRLs in 19 cases (79.1%). 8
9 Conclusions There is a big fluctuation in dose delivered to patients who underwent the same examination. The highest dose distribution is observed in thorax HR exam (% CV is 80.8%) whereas the lowest is observed in head cerebrum exams (% CV is 27.3%). In cases where the dose is higher than DRLs, parameters such as pitch, slice thickness and scan length are also higher, indicating possible ways of dose reduction. 9
10 References P C Shrimpton, M C Hillier, M A Lewis, M Dunn, NRPB W-67, Doses from Computed Tomography (CT) Examinations in the UK-2003 Review 10
Cumulative radiation CT dose in young traumatic patients: a single centre 5 years retrospective review
Cumulative radiation CT dose in young traumatic patients: a single centre 5 years retrospective review Poster No.: C-1604 Congress: ECR 2014 Type: Scientific Exhibit Authors: S. Salerno, C. Geraci, E.
Regional diagnostic reference levels and collective effective doses from CT scanners in India
Regional diagnostic reference levels and collective effective doses from CT scanners in India Roshan S Livingstone and Paul M Dinakaran Department of Radiology Christian Medical College, Vellore, S India
Doses from pediatric CT examinations in Norway Are pediatric scan protocols developed and in daily use?
Doses from pediatric CT examinations in Norway Are pediatric scan protocols developed and in daily use? Eva Godske Friberg * Norwegian Radiation Protection Authority, P.O. Box, Østerås, Norway Abstract.
CT Optimisation for Paediatric SPECT/CT Examinations. Sarah Bell
CT Optimisation for Paediatric SPECT/CT Examinations Sarah Bell Sarah.bell14@nhs.net Outline 1. Introduction 2. Aims and Objectives 3. Methods 4. Results 5. Discussion 6. Conclusions 7. References Introduction
Doses from Cervical Spine Computed Tomography (CT) examinations in the UK. John Holroyd and Sue Edyvean
Doses from Cervical Spine Computed Tomography (CT) examinations in the UK John Holroyd and Sue Edyvean Why a new dose survey? Number of enquires received concerning the current NDRL Concern that could
Conventional and spiral CT dose indices in Yazd general hospitals, Iran
Iran. J. Radiat. Res., 2006; 3 (4): 183-189 Conventional and spiral CT dose indices in Yazd general hospitals, Iran F. Bouzarjomehri 1*,M.H.Zare 2, D. Shahbazi 2 1 Department of Medical Physics, Shahid
Survey of patients CT radiation dose in Jiangsu Province
Original Article Page 1 of 6 Survey of patients CT radiation dose in Jiangsu Province Yuanyuan Zhou 1, Chunyong Yang 1, Xingjiang Cao 1, Xiang Du 1, Ningle Yu 1, Xianfeng Zhou 2, Baoli Zhu 1, Jin Wang
Why is CT Dose of Interest?
Why is CT Dose of Interest? CT usage has increased rapidly in the past decade Compared to other medical imaging CT produces a larger radiation dose. There is direct epidemiological evidence for a an increase
CURRENT CT DOSE METRICS: MAKING CTDI SIZE-SPECIFIC
CURRENT CT DOSE METRICS: MAKING CTDI SIZE-SPECIFIC Keith Strauss, MSc, FAAPM, FACR Cincinnati Children s Hospital University of Cincinnati College of Medicine Acknowledgments John Boone, PhD Michael McNitt-Grey,
BrightSpeed Elite CT with ASiR: Comparing Dose & Image Quality Rule Out Pulmonary Embolism on Initial & Follow-Up Exam
GE Healthcare BrightSpeed Elite CT with ASiR: Comparing Dose & Image Quality Rule Out Pulmonary Embolism on Initial & Follow-Up Exam Michael Swack, MD Diagnostic Radiologist Irvington Radiologists, PC
Quality Control and Patient Dosimetry on line for Computed Tomography
Quality Control and Patient Dosimetry on line for Computed Tomography Jose I. Ten 1,2, Eliseo Vano 2,3, Jose M. Fernandez-Soto 2,3, Roberto Sanchez 3, Juan Arrazola 1,2 1 Diagnostic Radiology Service and
CT Dose Estimation. John M. Boone, Ph.D., FAAPM, FSBI, FACR Professor and Vice Chair of Radiology. University of California Davis Medical Center
CT Dose Estimation John M. Boone, Ph.D., FAAPM, FSBI, FACR Professor and Vice Chair of Radiology 1 University of California Davis Medical Center CT Dose Estimation Introduction The CTDI Family of Metrics
Radiation Dose To Pediatric Patients in Computed Tomography in Sudan
Radiation Dose To Pediatric Patients in Computed Tomography in Sudan Omer Osman,Saeed Medical Physics Department, ALNeelain University, Sudan Presentation outlines Introduction Objectives Materials and
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
Measurement of organ dose in abdomen-pelvis CT exam as a function of ma, KV and scanner type by Monte Carlo method
Iran. J. Radiat. Res., 2004; 1(4): 187-194 Measurement of organ dose in abdomen-pelvis CT exam as a function of ma, KV and scanner type by Monte Carlo method M.R. Ay 1, M. Shahriari 2, S. Sarkar 3, P.
An Assessment of Organ and Effective Dose of Patients who Undertake CT Examinations in two Teaching Hospitals of Mashhad&Isfahan
An Assessment of Organ and Effective Dose of Patients who Undertake CT Examinations in two Teaching Hospitals of Mashhad&Isfahan *M.T.Bahreyni Toossi, **S.Mohandes Dastgherdi Medical Physics Dep., Faculty
Assessment of effective dose in paediatric CT examinations
Assessment of effective dose in paediatric CT examinations E. Dougeni 1,2 CL. Chapple 1, J. Willis 1, G. Panayiotakis 2 1 Regional Medical Physics Department, Freeman Hospital, Freeman Road, Newcastle
Managing Radiation Risk in Pediatric CT Imaging
Managing Radiation Risk in Pediatric CT Imaging Mahadevappa Mahesh, MS, PhD, FAAPM, FACR, FACMP, FSCCT. Professor of Radiology and Cardiology Johns Hopkins University School of Medicine Chief Physicist
Assessment of Patient Dose from CT Examinations in Khorasan, Iran
Iranian Journal of Medical Physics Vol. 9, No. 4, Autumn 2012, 233-238 Received: July 18, 2012; Accepted: November 17, 2012 Original Article Assessment of Patient Dose from CT Examinations in Khorasan,
Accounting for Imaging Dose
Accounting for Imaging Dose High Profile Over-exposures Lead to Growing Concern FDA issues warning in October 2009-209 patients exposed to 8 times typical dose for CT brain perfusion scan (3-4 Gy) - Some
Radiation dose optimization in CT planning of corrective scoliosis surgery. A phantom study.
Radiation dose optimization in CT planning of corrective scoliosis surgery. A phantom study. Abul-Kasim, Kasim; Gunnarsson, Mikael; Maly, Pavel; Ohlin, Acke; Maly Sundgren, Pia Published in: The Neuroradiology
Chief Radiographer TEI Clinical Associate 2016
MDCT Principles i and Applications Ε ΑGADAKOS MSc Ε. ΑGADAKOS MSc Chief Radiographer TEI Clinical Associate 2016 Aim To understand d recent technological advances in MSCT and how they can be effectively
A more accurate method to estimate patient dose during body CT examinations with tube current modulation
A more accurate method to estimate patient dose during body CT examinations with tube current modulation Poster No.: C-0738 Congress: ECR 2014 Type: Scientific Exhibit Authors: A. Kawaguchi 1, Y. Matsunaga
Whole Body CT Protocol Update 2018
Whole Body CT Protocol Update 2018 10 th Nordic Course in Trauma Radiology Gothenburg, Sweden K.SHANMUGANATHAN M.D. Disclosure of Commercial Interest Neither I nor my immediate family members have a financial
Calculation of Effective Doses for Radiotherapy Cone-Beam CT and Nuclear Medicine Hawkeye CT Laura Sawyer
Calculation of Effective Doses for Radiotherapy Cone-Beam CT and Nuclear Medicine Hawkeye CT Laura Sawyer Department of Medical Physics and Bioengineering, Royal United Hospital, Bath Overview Varian Acuity
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
ROMANIA MEDICAL EXPOSURE IN 2016 IN ROMANIAN RADIOLOGICAL DEPARTMENTS. Olga GIRJOABA and Alexandra CUCU
ROMANIA MEDICAL EXPOSURE IN 2016 IN ROMANIAN RADIOLOGICAL DEPARTMENTS Olga GIRJOABA and Alexandra CUCU National Institute of Public Health, Bucharest, Romania olga.garjoaba@insp.gov.ro PURPOSE Improvement
Diagnostic reference levels as a quality assurance tool
Australian Institute of Radiography The Radiographer 2009; 56 (3): 32 37 Literature review Diagnostic reference levels as a quality assurance tool KD Edmonds Medical Physics Section, Medical Radiation
Managing Patient Dose in Computed Tomography (CT) INTERNATIONAL COMMISSION ON RADIOLOGICAL PROTECTION
Managing Patient Dose in Computed Tomography (CT) International Commission on Radiological Protection Information abstracted from ICRP Publication 87 Available at www.icrp.org Task Group: M.M. Rehani,
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
National collection of local diagnostic reference levels in Norway and their role in optimization of X-ray examinations
National collection of local diagnostic reference levels in Norway and their role in optimization of X-ray examinations Eva Godske Friberg *, Anders Widmark and Ingrid Helen Ryste Hauge Norwegian Radiation
Low-dose CT Lung Cancer Screening Guidelines for Pulmonary Nodules Management Version 2
Low-dose CT Lung Cancer Screening Guidelines for Pulmonary Nodules Management Version 2 The Committee for Management of CT-screening-detected Pulmonary Nodules 2009-2011 The Japanese Society of CT Screening
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
Toshiba Aquillion 64 CT Scanner. Phantom Center Periphery Center Periphery Center Periphery
Comparison of radiation dose and imaging performance for the standard Varian x-ray tube and the Richardson Healthcare ALTA750 replacement tube for the Toshiba Aquillion CT scanners. by Robert L. Dixon,
Medical Physics and Informatics Original Research
Medical Physics and Informatics Original Research Christner et al. Estimating Effective Dose for CT Medical Physics and Informatics Original Research FOCUS ON: Jodie A. Christner 1 James M. Kofler Cynthia
Dosimetric Evaluation of Multislice CT Using Anthropomorphic Head Phantom
Original Article Dosimetric Evaluation of Multislice CT Using Anthropomorphic Head Phantom Seyedeh Fatemeh Seyedatashi 1, Mitra Athari 1, Ahmad Bitarafan-Rajabi 2, Hadi Hasanzadeh 3, *, Mehravar Rafati
SPECIFIC PRINCIPLES FOR DOSE REDUCTION IN HEAD CT IMAGING. Rajiv Gupta, MD, PhD Neuroradiology, Massachusetts General Hospital Harvard Medical School
SPECIFIC PRINCIPLES FOR DOSE REDUCTION IN HEAD CT IMAGING Rajiv Gupta, MD, PhD Neuroradiology, Massachusetts General Hospital Harvard Medical School OUTLINE 1 st Presentation: Dose optimization strategies
Utilization of a Patient Dose Tracking and Monitoring System to Modify CT Protocols and Lower Patient Doses
Utilization of a Patient Dose Tracking and Monitoring System to Modify CT Protocols and Lower Patient Doses Randell Kruger, Ph.D. Medical Physics and Radiation Safety Marshfield Clinic Health Systems Learning
Machine Learning Powered Automatic Organ Classification for Patient Specific Organ Dose Estimation
Machine Learning Powered Automatic Organ Classification for Patient Specific Organ Dose Estimation Junghwan Cho, Eunmi Lee, Hyunkwang Lee, Bob Liu, Xinhua Li, Shahein Tajmir, Dushyant Sahani, and Synho
Guidelines for the Management of Pulmonary Nodules Detected by Low-dose CT Lung Cancer Screening
Guidelines for the Management of Pulmonary Nodules Detected by Low-dose CT Lung Cancer Screening 1. Introduction In January 2005, the Committee for Preparation of Clinical Practice Guidelines for the Management
A comparison of radiation doses from modern multi-slice Computed Tomography angiography and conventional diagnostic Angiography:
A comparison of radiation doses from modern multi-slice Computed Tomography angiography and conventional diagnostic Angiography: Rob Loader Oliver Gosling Introduction Approached by Dr Oliver Gosling (Research
An audit of radiation dose of 4D CT in a radiotherapy department
An audit of radiation dose of 4D CT in a radiotherapy department Poster No.: R-0097 Congress: Type: Authors: Keywords: DOI: 2014 CSM Scientific Exhibit T. Hubbard, J. Callahan, J. Cramb, R. Budd, T. Kron;
Breast Cancer PET/CT Imaging Protocol
Breast Cancer PET/CT Imaging Protocol Scanning Protocol: Patients are scanned from the top of the neck through the pelvis. Arms-up position is used to avoid beam-hardening artifact in the chest and abdomen.
CT Radiation Risks and Dose Reduction
CT Radiation Risks and Dose Reduction Walter L. Robinson, M.S. D.A.B.S.N.M., D.A.B.M.P., D.A.B.R. Consultant Certified Medical Radiation Health & Diagnostic Imaging Physicist Medical Radiation and Children
Managing Patient Dose in Computed Tomography (CT)
Managing Patient Dose in Computed Tomography (CT) International Commission on Radiological Protection Information abstracted from ICRP Publication 87 Available at www.icrp.org Task Group: M.M. Rehani,
What Have We Learned from Children? Donald P. Frush, MD
What Have We Learned from Children? Donald P. Frush, MD Medical Radiation and Children: Accomplishments We can lower doses (read noisier exams) We should lower doses Multiphase exams should be justified
Radiation Dose Reduction Strategies in Coronary CT Angiography
Radiation Dose Reduction Strategies in Coronary CT Angiography Noor Diyana Osman, PhD noordiyana@usm.my Contents: Introduction Radiation dosimetry in CT Radiation risk associated with coronary CT angiography
CT Dose Reduction in Pediatric Patients
CT Dose Reduction in Pediatric Patients By Kelly Firestine, RT(R)(CT)(M) Executive Summary CT is an incredibly valuable imaging tool, but there are unique concerns with pediatric patients, including the
SOMATOM Drive System Owner Manual Dosimetry and imaging performance report
www.siemens.com/healthcare SOMATOM Drive System Owner Manual Dosimetry and imaging performance report Table of contents 1 Dosimetry and imaging performance report 5 1.1 Dose information 5 1.1.1 General
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
8/1/2017. Financial Disclosures. Dose Tracking at MGH. How Dose Tracking Affected Protocol Optimization in a Tertiary Quaternary Healthcare Center
How Dose Tracking Affected Protocol Optimization in a Tertiary Quaternary Healthcare Center Mannudeep K. Kalra, MD Webster Center for Quality and Safety Massachusetts General Hospital Harvard Medical School
Scientific Exhibit Authors:
Clinical Audit on Optimization of Radiation Dose from MDCT: Effect on Diagnostic Reference Levels for Brain, Sinus, Cervical Spine, Chest, Abdomen-Pelvis, and Lumbar Spine Examinations and on Nationwide
Introduction Pediatric malignancies Changing trends & Radiation burden Radiation exposure from PET/CT Image gently PET & CT modification - PET/CT
Introduction Pediatric malignancies Changing trends & Radiation burden Radiation exposure from PET/CT Image gently PET & CT modification - PET/CT protocols Tips Leukaemia / lymphoma: ~ 35% acute lymphoblastic
Use of IV-contrast versus IV-and oral-contrast in the evaluation of abdominal pain on CT in the emergency department
Use of IV-contrast versus IV-and oral-contrast in the evaluation of abdominal pain on CT in the emergency department Poster No.: B-0693 Congress: ECR 2016 Type: Authors: Scientific Paper M. Wasserman 1,
CT NUMBER ACCURACY ANALYSIS FOR RADIOTHERAPY TREATMENT PLANNING IMAGING
CT NUMBER ACCURACY ANALYSIS FOR RADIOTHERAPY TREATMENT PLANNING IMAGING Julian Liu a, Keisha Robinson a, DhanaJayan Kothandan a and Joshua Luis b (a) Cancer Centre London (b) University College London
CT Radiation Dosimetry Study Using Monte Carlo Simulation and. Computational Anthropomorphic Phantoms
CT Radiation Dosimetry Study Using Monte Carlo Simulation and Computational Anthropomorphic Phantoms by Yakun Zhang Graduate Program in Medical Physics Duke University Date: Approved: Ehsan Samei, Supervisor
Patient Doses in Chest CT Examinations: Comparison of Various CT Scanners
SERBIAN JOURNAL OF ELECTRICAL ENGINEERING Vol. 10, No. 1, February 2013, 31-36 UDK: 621.386.8:616.24-073 DOI: 10.2298/SJEE1301031B Patient Doses in Chest CT Examinations: Comparison of Various CT Scanners
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
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
Translating Protocols Across Patient Size: Babies to Bariatric
Translating Protocols Across Patient Size: Babies to Bariatric Cynthia H. McCollough, PhD, FACR, FAAPM Professor of Radiologic Physics Director, CT Clinical Innovation Center Department of Radiology Mayo
Bone Densitometry Radiation dose: what you need to know
Bone Densitometry Radiation dose: what you need to know John Damilakis, PhD Associate Professor and Chairman University of Crete, Iraklion, Crete, GREECE Estimation of bone status using X-rays Assessment
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,
Diagnostic Reference Levels (DRLs)
Section 7 Diagnostic Reference Levels (DRLs) Establishment and Use of Diagnostic Reference Levels (DRLs) The National Radiation Safety Committee (NRSC), established in November 2007, is a statutory committee
Class Time: 9/12,10-10,11-21 Days: Listed Saturdays 1p-4p Room:HS208. Office Phone: Home Phone:
Semester/Year: FALL 2015 CASPER COLLEGE COURSE SYLLABUS RDTK 1920 H1 Computed Tomography Procedures I Lecture Hours: 3 Lab Hours: 0 Credit Hours: 3 Class Time: 9/12,10-10,11-21 Days: Listed Saturdays 1p-4p
Estimation of the Risk of Cancer Associated with Pediatric Cranial Computed Tomography
British Journal of Medicine & Medical Research 9(10): 1-7, 2015, Article no.bjmmr.18079 ISSN: 2231-0614 SCIENCEDOMAIN international www.sciencedomain.org Estimation of the Risk of Cancer Associated with
IMAGE GENTLY HOW CAN YOU HELP?
IMAGE GENTLY HOW CAN YOU HELP? Keith J. Strauss, MSc, FAAPM, FACR Director, Radiology Physics & Engineering Children s s Hospital Boston Harvard Medical School Acknowledgment Marilyn J. Goske,, MD Robert
EXPERIMENTAL AND THERAPEUTIC MEDICINE 9: , 2015
2384 Dose study of electrocardiogram automatic tube current modulation technology in prospective coronary computed tomography angiography scans of overweight patients GUIRU HE, XIAOPEI LIU, YAN LIU, WEI
Purpose. Methods and Materials. Results
Prevalence and significance of hypoattenuating hepatic lesions deemed too small to characterise: How are we following up these lesions and what are the outcomes? Poster No.: C-014 Congress: ECR 2009 Type:
Trends in examination frequency and population doses in Norway,
Workshop on European Populaltion Doses from Medical Exposure, 24-26 April 2012, Athens, Greece Trends in examination frequency and population doses in Norway, 2002-2008 OLERUD H.M. 1,2, FRIBERG E.G. 1,
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
Optimizing radiation dose by varying age at pediatric temporal bone CT
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 16, NUMBER 1, 2015 Optimizing radiation dose by varying age at pediatric temporal bone CT Daichi Noto, 1 Yoshinori Funama, 2a Mika Kitajima, 3 Daisuke
Multislice CT versus cone beam CT: dosimetric and image quality comparision.
Multislice CT versus cone beam CT: dosimetric and image quality comparision. Poster No.: C-2589 Congress: ECR 2015 Type: Authors: Scientific Exhibit C. Dionisi 1, A. Crispo 2, E. Stefani 3, A. Lovaglio
Estimation of the number of total and pediatric CT procedures based. on a nationwide survey in Japan
Estimation of the number of total and pediatric CT procedures based on a nationwide survey in Japan Koji Ono 1, Nobuhiko Ban 2, Kai Michiaki 1. 1 Oita University of Nursing and Health Sciences 2944-9,
Technology Assessment Institute: Summit on CT Dose Cardiac CT - Optimal Use of Evolving Scanner Technologies
Cardiac CT - Optimal Use of Evolving Scanner Technologies P. Rogalla, M.D. Dept. of Medical Imaging University of Toronto Special thanks to Dr. Lembcke, Dr. Hein Charité, Berlin Disclosures No salaries
128-slice dual-source CT coronary angiography using highpitch scan protocols in 102 patients
128-slice dual-source CT coronary angiography using highpitch scan protocols in 102 patients Poster No.: C-0634 Congress: ECR 2010 Type: Scientific Exhibit Topic: Cardiac Authors: Y. H. Choe, J. W. Lee,
Skyscan 1076 in vivo scanning: X-ray dosimetry
Skyscan 1076 in vivo scanning: X-ray dosimetry DOSIMETRY OF HIGH RESOLUTION IN VIVO RODENT MICRO-CT IMAGING WITH THE SKYSCAN 1076 An important distinction is drawn between local tissue absorbed dose in
Pushing the limits of cardiac CT. Steven Dymarkowski Radiology / Medical Imaging Research Centre
Pushing the limits of cardiac CT Steven Dymarkowski Radiology / Medical Imaging Research Centre 5 X 2013 Introduction Rapid technological advances and new clinical applications in cardiovascular imaging
Tracking Doses in the Pediatric Population
Tracking Doses in the Pediatric Population Frederic H. Fahey DSc Boston Children s Hospital Harvard Medical School frederic.fahey@childrens.harvard.edu Disclosures Sadly, none that pay me any money! SNMMI
Dianna Cody, PhD, DABR, FAAPM Professor & Clinical Operations Director Imaging Physics U.T. M.D. Anderson Cancer Center Houston, TX
Dianna Cody, PhD, DABR, FAAPM Professor & Clinical Operations Director Imaging Physics U.T. M.D. Anderson Cancer Center Houston, TX Learning Objectives: Limitations for estimating patient dose for CT Methods
Estimated cumulative radiation dose from PET/CT in children with malignancies: a 5-year retrospective review
Pediatr Radiol (1) :681 686 DOI 1.17/s247-9-1434-z ORIGINAL ARTICLE Estimated cumulative radiation dose from PET/CT in children with malignancies: a 5-year retrospective review Soni C. Chawla & Noah Federman
The effects of computed tomography derived low doses on human peripheral blood cells
The effects of computed tomography derived low doses on human peripheral blood cells Piroska Virág The Oncology Institute Prof. Dr. I. Chiricuta, Cluj-Napoca, Romania Low dose radiation effects on the
Risk of extracranial secondary cancer after radiosurgery: comparison of Gamma Knife Perfexion, Cyberknife and Novalis
Risk of extracranial secondary cancer after radiosurgery: comparison of Gamma Knife Perfexion, Cyberknife and Novalis Dr Alison Cameron, Clinical Oncologist, Bristol, UK Ian Paddick, Consultant Physicist,
Patient Dose Estimates. from CT Examinations. Patient Dose Estimates
Patient Dose Estimates from CT Examinations Patient Dose Estimates from CT Examinations John M. Boone, Ph.D. Professor and Vice Chairman of Radiology Professor of Biomedical Engineering University of California,
JMSCR Vol 06 Issue 12 Page December 2018
www.jmscr.igmpublication.org Impact Factor (SJIF): 6.379 Index Copernicus Value: 79.54 ISSN (e)-2347-176x ISSN (p) 2455-0450 DOI: https://dx.doi.org/10.18535/jmscr/v6i12.80 Diagnostic Reference Levels:
Ask EuroSafe Imaging Tips & Tricks. CT Working Group. On the use of Diagnostic Reference Levels in CT
Ask EuroSafe Imaging Tips & Tricks CT Working Group On the use of Diagnostic Reference Levels in CT Robert Bujila (Karolinska University Hospital, SE) Eileen Kelly (Galway University Hospitals, IE) Matthias
State of the art and future development for standardized estimation of organ doses in CT
State of the art and future development for standardized estimation of organ doses in CT March 2015 William J. O Connel, Dr. Ph, Senior Medical Physicist Imagination at work. Agenda Introduction Duke Florida
Estimating Iodine Concentration from CT Number Enhancement
Estimating Iodine Concentration from CT Number Enhancement Rosemary Eaton, Andrew Shah, Jane Shekhdar Medical Physics, Mount Vernon Hospital CT Users Group 4 th October 212, Edinburgh Summary Background
Radiation Dose Optimization in Cardiac CT: A Technical Review. CHENG Wai Kwong. 17 May Contents
Radiation Dose Optimization in Cardiac CT: A Technical Review CHENG Wai Kwong 17 May 2014 Contents 1. Introduction and background 2. Cardiac CT synchronization techniques 3. 4. Conclusion 1 Introduction
Research Article The Capabilities and Limitations of Clinical Magnetic Resonance Imaging for Detecting Kidney Stones: A Retrospective Study
Biomedical Imaging Volume 2016, Article ID 4935656, 6 pages http://dx.doi.org/10.1155/2016/4935656 Research Article The Capabilities and Limitations of Clinical Magnetic Resonance Imaging for Detecting
Computed Tomography Dose in Paediatric Care: Simple Dose Estimation Using Dose Length Product Conversion Coefficients
Original Article Computed Tomography Dose in Paediatric Care: Simple Dose Estimation Using Dose Length Product Conversion Coefficients Nor Hanani Mohd Tap, Mohamed Ariff Jaafar Sidek, Siti Farizwana Mohd
Ultra-low dose CT of the acute abdomen: Spectrum of imaging findings
Ultra-low dose CT of the acute abdomen: Spectrum of imaging findings Poster No.: C-1452 Congress: ECR 2010 Type: Educational Exhibit Topic: GI Tract Authors: P. A. Vlachou, C. Kloeters, S. Kandel, P. Hein,
Characterization of lung metastasis based on radiomics features: issues related to acquisition parameters and to lesion segmentation
Characterization of lung metastasis based on radiomics features: issues related to acquisition parameters and to lesion segmentation Authors: F. Ambrogi 2, P. E. Colombo 1-2, C. De Mattia 1-2, D. Lizio
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
Computed tomography of the chest: I. Basic principles
BJA Education, 15 (6): 299 304 (2015) doi: 10.1093/bjaceaccp/mku063 Advance Access Publication Date: 2 February 2015 Matrix reference 1A03, 2A12 Computed tomography of the chest: I. Basic principles P
Pediatric chest HRCT using the idose 4 Hybrid Iterative Reconstruction Algorithm: Which idose level to choose?
Journal of Physics: Conference Series PAPER OPEN ACCESS Pediatric chest HRCT using the idose 4 Hybrid Iterative Reconstruction Algorithm: Which idose level to choose? To cite this article: M Smarda et
Radiation induced DNA double strand breaks undergoing PET/CT examinations.
Radiation induced DNA double strand breaks undergoing PET/CT examinations. Poster No.: C-1685 Congress: ECR 2011 Type: Scientific Exhibit Authors: M. S. May, M. Brand, T. Löwe, M. Sommer, C. Engert, U.
Thoracic examinations with 16, 64, 128 and 256 slices CT: comparison of exposure doses measured with an anthropomorphic phantom and TLD dosimeters
Thoracic examinations with 16, 64, 128 and 256 slices CT: comparison of exposure doses measured with an anthropomorphic phantom and TLD dosimeters Poster No.: C-2584 Congress: ECR 2015 Type: Scientific
Image Diagnostic Technology Ltd IDT Ireland, 15 Market Street, Kinsale, Co. Cork, Ireland P17 XN65 Tel: Mob: IRL:
Image Diagnostic Technology Ltd IDT Ireland, 15 Market Street, Kinsale, Co. Cork, Ireland P17 XN65 Tel: +44 20 8819 9158 Mob: +44 7767 366596 IRL: +353 21 470 9501 Web: www.simplantscans.com Email: info@ctscan.co.uk
ICRP Symposium on the International System of Radiological Protection
ICRP Symposium on the International System of Radiological Protection October 24-26, 2011 Bethesda, MD, USA M. Balonov, ICRP Committee 2, IRH, Russia P. Shrimpton, HPA, UK To be used just for regulatory
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)