Research Support. Dual-Source CT: What is it and How Do I Test it? Cynthia H. McCollough, Ph.D.
|
|
- Angela Bradley
- 5 years ago
- Views:
Transcription
1 Dual-Source CT: What is it and How Do I Test it? Cynthia H. McCollough, Ph.D. CT Clinical Innovation Center Department of Radiology Mayo Clinic College of Medicine Rochester, MN Research Support National Institute of Health EB04898, CA75333, AR27065, HR46158 Flight Attendant Medical Research Institute Siemens Medical Solutions Bayer Healthcare RTI Electronics Tube A: 50 cm FOV Tube B: 26 cm FOV Each tube/detector pair has: 80 kw generator 32 x 0.6 mm detector array Double z sampling with Z-FFS No gantry tilt Tube A: 50 cm FOV Tube B: 26 cm FOV
2 I. Single Tube Operation - Performs Same as a Sensation 64 Temporal Resolution = Rotation Time 2 = 330 ms 2 = 165 ms II. Dual Tube Operation - x 2 Improved Temporal Resolution Temporal Resolution = Rotation Time 4 = 330 ms 4 = 83 ms 83 ms vs. 165 ms (same raw data, same phase) Dual tube recon Single tube recon RCA LAD RCA Mean HR=90 bpm LAD
3 125 ms 82 ms 165 ms Dose Continuous irradiation (spiral acquisition) with two x-ray tubes would double the radiation dose Four dose reduction strategies: Cardiac beam shaping filter (bowtie filter) 3-D adaptive noise filtration Variable pitch values (based on heart rate) ECG-pulsing with arrhythmia detection and adjustable temporal windows McCollough et al., Radiology 243(3): (2007) MDCT DSCT MDCT pulsed DSCT 310 ms DSCT 210 ms DSCT 110 ms No ECG pulsing No ECG No ECG No ECG Pulsing pulsing Pulsing pulsing Pulsing pulsing Pulsing < >90 Heart Rate (bpm) III. Dual Source (Obese) Mode Use both tubes at same kv to double the available power to 160 kw Reconstructed images are the SUMMATION of Tube A and B Avoids need to trade off exam speed (pitch) or narrow slices (collimation) for photon flux Allows much higher mas for Obese patients 80 kvp imaging
4 IV. Material Specific Imaging Use each tube at a different kv to exploit the kv-dependent nature of CT # 80kV Bone 670 HU Iodine 296 HU Applications of Dual-Energy CT Iodine imaging Automated bone removal in CT angiography Plaque removal Blood pool imaging (Perfused blood volume) Soft tissue imaging Enhanced visualization of tendons & ligaments Virtual non-contrast (Iodine removal) Bone 450 HU Iodine 144 HU 140kV Dose reduction Material characterization TR Johnson et al. Eur Radiology 17(6): (2007)
5 Applications of Dual-Energy CT Iodine imaging Automated bone removal in CT angiography Plaque removal Blood pool imaging (Perfused blood volume) Soft tissue imaging Enhanced visualization of tendons & ligaments Virtual non-contrast (Iodine removal) Dose reduction Material characterization Direct subtraction of bone in complicated anatomical regions Courtesy of University Hospital of Munich - Grosshadern / Munich, Germany Applications of Dual-Energy CT Iodine imaging Automated bone removal in CT angiography Plaque removal Blood pool imaging (Perfused blood volume) Soft tissue imaging Enhanced visualization of tendons & ligaments Virtual non-contrast (Iodine removal) Dose reduction Material characterization Contrast enhanced - Nephrographic phase DE image from same scan Virtual non-contrast O. Dzyubak, Tuesday 2:42 pm, Rm L100J
6 Implications for Performance Testing Image Quality Single source mode: No change from any MDCT Dual source cardiac mode: optional Use demo ECG mode Coronary CTA: 120 kvp, 240 mas/rot, 0.33 sec, 32x0.6, pitch auto selected, 3 mm, B26f, retrospectively-gated spiral mode ACR phantom: CT number accuracy Large (> 30 cm diameter) water or uniform acrylic phantom Uniformity and noise in axial and coronal images mas/rot represents mas sum from both tubes (not effective mas = mas/pitch) Implications for Performance Testing Image Quality Dual source non-cardiac (obese) mode: Optional Average image (0.5 Tube A Tube B) Obese XXL: 120 kvp, 300 eff. mas, 0.5 s, 24x1.2 mm, pitch < 1.0, 5 mm, B20f, spiral ACR phantom: CT number accuracy Large (> 30 cm) water or uniform acrylic phantom Uniformity and noise in axial and coronal images Implications for Performance Testing Image Quality Dual energy mode: Suggested Mixed image ( kv kv) DE abdomen: 140/80 kvp, 95/400 eff. mas, 0.5 s, 14x1.2 mm, pitch < 0.7, 5 mm, D30f, spiral ACR CT phantom: CT number accuracy Fat (polyethylene) and bone (Teflon) expected to have different CT numbers relative to 120 kvp Check accuracy of water and air CT numbers Large (> 30 cm) water or uniform acrylic phantom Uniformity and noise in axial and coronal images Implications for Performance Testing Dose Must test both tubes, recommend to do separately Tube A: No change from any MDCT CTDIw in head and body phantoms for routine head and body CTDIair for all collimations at routine kvp CTDIair for all kvp settings at routine collimation IEC Ed2 (Constancy Testing) Tube B: Fewer collimations available HVL for both tubes at acceptance testing (required after any tube chance in some states) Change of one tube does NOT affect other tube Doses are additive
7 Body Dose Measurement (Body CTDI phantom, Body filter) 80kVp 100kVp 120kVp 140kVp 2x1 1x5 1x10 14x1.2 24x1.2 32x0.6 CTDIw 32x0.6(UHR) AT (A,B) UHR =Ultra highresolution focalspot. AT = acceptance test only. QC = AT + scheduled QC or after tube change Cardiac Dose Measurement (Body CTDI phantom, Head filter) 80kVp 100kVp 120kVp 140kVp 2x1 1x5 1x10 24x1.2 32x0.6 CTDIw 32x0.6(UHR) AT (A,B) UHR =Ultra highresolution focalspot. AT = acceptance test only. QC = AT + scheduled QC or after tube change Head Dose Measurement (Head CTDI phantom, Head filter) 80kVp 100kVp 120kVp 140kVp 2x1 1x5 1x10 14x1.2 24x1.2 32x0.6 CTDIw 32x0.6(UHR) AT (A,B) UHR =Ultra highresolution focalspot. AT = acceptance test only. QC = AT + scheduled QC or after tube change
8
9
10
11 Mayo CT Clinic Innovation Center and Dept. of Radiology L Yu, MR Bruesewitz, JM Kofler, AN Primak, AP Dzyubak, X Liu JG Fletcher, TJ Vrtiska, EE Williamson, JF Breen, DM Hough Additional Reference: Flohr, TG et al., European Radiology 16: (2006)
12/21/2016. Siemens Medical Systems Research Agreement Philips Healthcare Research Agreement AAN and ASN Committees
Joseph V. Fritz, PhD Nandor Pintor, MD Dent Neurologic Institute ASN 2017 Friday, January 20, 2017 Siemens Medical Systems Research Agreement Philips Healthcare Research Agreement AAN and ASN Committees
More informationSoftware and Hardware in CCTA. Elly Castellano PhD
Software and Hardware in CCTA Elly Castellano PhD Outline technical requirements for coronary CTA the modern cardiac CT scanner ECG-gating technology image reconstruction algorithms 2 Technical requirements
More informationPitfalls and Remedies of MDCT Scanners as Quantitative Instruments
intensity m(e) m (/cm) 000 00 0 0. 0 50 0 50 Pitfalls and Remedies of MDCT Scanners as Jiang Hsieh, PhD GE Healthcare Technology University of Wisconsin-Madison Root-Causes of CT Number Inaccuracies Nature
More informationHISTORY. CT Physics with an Emphasis on Application in Thoracic and Cardiac Imaging SUNDAY. Shawn D. Teague, MD
CT Physics with an Emphasis on Application in Thoracic and Cardiac Imaging Shawn D. Teague, MD DISCLOSURES 3DR- advisory committee CT PHYSICS WITH AN EMPHASIS ON APPLICATION IN THORACIC AND CARDIAC IMAGING
More informationTOPICS: CT Protocol Optimization over the Range of Patient Age & Size and for Different CT Scanner Types: Recommendations & Misconceptions
CT Protocol Optimization over the Range of Patient Age & Size and for Different CT Scanner Types: Recommendations & Misconceptions TOPICS: Computed Tomography Quick Overview CT Dosimetry Effects of CT
More informationCOMPUTED TOMOGRAPHY 1
COMPUTED TOMOGRAPHY 1 Why CT? Conventional X ray picture of a chest 2 Introduction Why CT? In a normal X-ray picture, most soft tissue doesn't show up clearly. To focus in on organs, or to examine the
More informationImage Quality and Dose. Image Quality and Dose. Image Quality and Dose Issues in MSCT. Scanner parameters affecting IQ and Dose
Image Quality and Dose Issues in MSCT Image Quality and Dose Image quality Image noise Spatial resolution Contrast Artefacts Speckle and sharpness S. Edyvean St. George s Hospital London SW17 0QT Radiation
More informationdiagnostic examination
RADIOLOGICAL PHYSICS 2011 Raphex diagnostic examination Adel A. Mustafa, Ph.D., Editor PUBLISHED FOR: RAMPS (Radiological and Medical Physics Society of New York) preface The RAPHEX Diagnostic exam 2011
More informationWide-Detector CT for TAVR Planning:
Wide-Detector CT for TAVR Planning: Impact on Iodine Dose, Radiation Dose, and Image Quality SCBTMR 2015 Annual Course Thursday, October 8 William P. Shuman MD FSCBTMR Department of Radiology University
More informationAutomated dose control in multi-slice CT. Nicholas Keat Formerly ImPACT, St George's Hospital, London
Automated dose control in multi-slice CT Nicholas Keat Formerly ImPACT, St George's Hospital, London Introduction to presentation CT contributes ~50+ % of all medical radiation dose Ideally all patients
More information1. Patient size AEC. Large Patient High ma. Small Patient Low ma
Comparison of the function and performance of CT AEC systems CTUG meeting by Emily Field Trainee clinical scientist 14 th th Breakdown CT Automatic Exposure Control (AEC) Background Project Description
More information160-slice CT SCANNER / New Standard for the Future
TECHNOLOGY HISTORY For over 130 years, Toshiba has been a world leader in developing technology to improve the quality of life. Our 50,000 global patents demonstrate a long, rich history of leading innovation.
More informationQC Testing for Computed Tomography (CT) Scanner
QC Testing for Computed Tomography (CT) Scanner QA - Quality Assurance All planned and systematic actions needed to provide confidence on a structure, system or component. all-encompassing program, including
More informationTranslating Protocols Between Scanner Manufacturer and Model
Translating Protocols Between Scanner Manufacturer and Model Robert J. Pizzutiello, MS, FAAPM, FACMP Sr. Vice-President, Global Physics Solutions President, Upstate Medical Physics Objectives Understand
More informationDose Reduction in Helical CT: Dynamically Adjustable z-axis X-Ray Beam Collimation
Medical Physics and Informatics Original Research Christner et al. CT Dose Reduction Medical Physics and Informatics Original Research Downloaded from www.ajronline.org by 8.243.133.8 on 2/26/18 from IP
More informationSlide 1. Slide 2. Slide 3 ACR CT Accreditation. Multi-Slice CT Artifacts and Quality Control. What are the rules or recommendations for CT QC?
Slide 1 Multi-Slice CT Artifacts and Quality Control Dianna Cody, Ph.D. Chief, Radiologic Physics UT MD Anderson Cancer Center Houston, TX Slide 2 What are the rules or recommendations for CT QC? AAPM
More informationDetector technology in simultaneous spectral imaging
Computed tomography Detector technology in simultaneous spectral imaging Philips IQon Spectral CT Z. Romman, I. Uman, Y. Yagil, D. Finzi, N. Wainer, D. Milstein; Philips Healthcare While CT has become
More informationQC by the MPE in Belgium
Acceptance testing of state-of-the-art CT scanners using a new national protocol: first experience on a large number of scanners of different make and model the working group Radiology of the Belgian Hospital
More informationOverview of Safety Code 35
Common Quality Control Procedures for All s Quality Control Procedures Film All s Daily Quality Control Tests Equipment Warm-up (D1) According to manufacturers instructions Can include auto calibration(d1)
More informationIterative Reconstruction in Image Space. Answers for life.
Iterative Reconstruction in Image Space Answers for life. Iterative Reconstruction in Image Space * (IRIS) * Please note: IRIS is used as an abbreviation for Iterative Reconstruction in Image Space throughout
More informationMultislice CT: Current Technology and Future Developments
Multislice CT: Current Technology and Future Developments 1 Stefan Ulzheimer and Thomas Flohr Contents 1.1 Introduction 3 1.2 System Design 5 1.2.1 Gantry 6 1.2.2 X-Ray Tube and Generator 6 1.2.3 MDCT
More informationI. PERFORMANCE OF X-RAY PRODUCTION COMPONENTS FLUOROSCOPIC ACCEPTANCE TESTING: TEST PROCEDURES & PERFORMANCE CRITERIA
FLUOROSCOPIC ACCEPTANCE TESTING: TEST PROCEDURES & PERFORMANCE CRITERIA EDWARD L. NICKOLOFF DEPARTMENT OF RADIOLOGY COLUMBIA UNIVERSITY NEW YORK, NY ACCEPTANCE TESTING GOALS PRIOR TO 1st CLINICAL USAGE
More informationFocal Spot Blooming in CT: We Didn t Know We Had a Problem Until We Had a Solution
Focal Spot Blooming in CT: We Didn t Know We Had a Problem Until We Had a Solution Cynthia H. McCollough, PhD, DABR, FAAPM, FACR Director, CT Clinical Innovation Center Professor of Medical Physics and
More informationElectronic Noise in CT Detectors: Impact on Image Noise and Artifacts
Medical Physics and Informatics Original Research Duan et al. Electronic Noise in CT Detectors Medical Physics and Informatics Original Research Xinhui Duan 1 Jia Wang 1,2 Shuai Leng 1 ernhard Schmidt
More informationNeuViz 16 Computed Tomography. Elevating routine imaging for exceptional results
NeuViz 16 Computed Tomography Elevating routine imaging for exceptional results Essence NeuViz 16 Raising the bar on clinical utility in routine imaging. Get more. More clinical information for patients.
More informationSuppression of metal artifacts using image-based monoenergetic DECT imaging
Suppression of metal artifacts using image-based monoenergetic DECT imaging Poster No.: C-0519 Congress: ECR 2011 Type: Scientific Paper Authors: B. Krauss, B. Schmidt, M. Sedlmair, T. Flohr; Forchheim/DE
More informationMeasurement of table feed speed in modern CT
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 15, NUMBER 3, 2014 Measurement of table feed speed in modern CT Atsushi Fukuda, 1,2a Pei-Jan P. Lin, 3 Kosuke Matsubara, 2 Tosiaki Miyati 2 Department
More informationabc MHRA Philips Mx8000 IDT CT scanner technical evaluation September 2004 Best choice best practice nww.medical-devices.nhs.
abc September 2004 MHRA 04099 Philips Mx8000 IDT CT scanner technical evaluation Best choice best practice www.mhra.gov.uk nww.medical-devices.nhs.uk About MHRA evaluation reports. What you can expect.
More informationSOMATOM Esprit A Bundle of Energy
SOMATOM Esprit A Bundle of Energy DATA SOMATOM Esprit An economical CT scanner designed for...... Excellent spiral image quality... A wide range of clinical applications... Value performance and reliabilty
More informationBreast Tomosynthesis. Bob Liu, Ph.D. Department of Radiology Massachusetts General Hospital And Harvard Medical School
Breast Tomosynthesis Bob Liu, Ph.D. Department of Radiology Massachusetts General Hospital And Harvard Medical School Outline Physics aspects of breast tomosynthesis Quality control of breast tomosynthesis
More informationInside Biograph mct.
Inside Biograph mct The technologies behind the world s first molecular CT. www.siemens.com/mi Large 78 cm bore helps reduce claustrophobia and provides more room for RTP positioning devices. 227 kg (500
More informationCHAPTER 2 COMMISSIONING OF KILO-VOLTAGE CONE BEAM COMPUTED TOMOGRAPHY FOR IMAGE-GUIDED RADIOTHERAPY
14 CHAPTER 2 COMMISSIONING OF KILO-VOLTAGE CONE BEAM COMPUTED TOMOGRAPHY FOR IMAGE-GUIDED RADIOTHERAPY 2.1 INTRODUCTION kv-cbct integrated with linear accelerators as a tool for IGRT, was developed to
More informationFeatures and Weaknesses of Phantoms for CR/DR System Testing
Physics testing of image detectors Parameters to test Features and Weaknesses of Phantoms for CR/DR System Testing Spatial resolution Contrast resolution Uniformity/geometric distortion Dose response/signal
More informationSAFIRE. Sinogram Affirmed Iterative Reconstruction. Answers for life.
Neuro Thoracic Abdominal Abdominal Cardiovascular Pediatric SAFIRE Sinogram Affirmed Iterative Reconstruction Answers for life. SAFIRE * (Sinogram Affirmed Iterative Reconstruction) * The information
More informationData. microcat +SPECT
Data microcat +SPECT microcat at a Glance Designed to meet the throughput, resolution and image quality requirements of academic and pharmaceutical research, the Siemens microcat sets the standard for
More informationTORNIER BLUEPRINT. 3D Planning + PSI SCAN PROTOCOL
TORNIER BLUEPRINT 3D Planning + PSI SCAN PROTOCOL Contents 3 Introduction 3 Patient preparation 3 Scanning instructions 4 Image instructions 5 Scanning parameters 6 Technical instructions 2 BLUEPRINT 3D
More informationTest Equipment for Radiology and CT Quality Control Contents
Test Equipment for Radiology and CT Quality Control Contents Quality Control Testing...2 Photometers for Digital Clinical Display QC...3 Primary Workstations...3 Secondary Workstations...3 Testing of workstations...3
More informationDose Reduction and Image Preservation After the Introduction of a 0.1 mm Cu Filter into the LODOX Statscan unit above 110 kvp
Dose Reduction and Image Preservation After the Introduction of a into the LODOX Statscan unit above 110 kvp Abstract: CJ Trauernicht 1, C Rall 1, T Perks 2, G Maree 1, E Hering 1, S Steiner 3 1) Division
More information7/24/2014. Image Quality for the Radiation Oncology Physicist: Review of the Fundamentals and Implementation. Disclosures. Outline
Image Quality for the Radiation Oncology Physicist: Review of the Fundamentals and Implementation Image Quality Review I: Basics and Image Quality TH-A-16A-1 Thursday 7:30AM - 9:30AM Room: 16A J. Anthony
More informationComputed Tomography. The Fundamentals of... THE FUNDAMENTALS OF... Jason H. Launders, MSc. Current Technology
The Fundamentals of... Computed Tomography Computed Tomography (CT) systems use x-rays to produce images of slices through a patient s anatomy. Despite having lower spatial resolution than other x-ray
More informationSOMATOM Sensation 4 Computed Tomography System for Multislice Spiral Scanning
SOMATOM Sensation 4 Computed Tomography System for Multislice Spiral Scanning SOMATOM Sensation 4 Computed Tomography System for Multislice Spiral Scanning Siemens has been a global player in CT for more
More informationA comparison of two methods for the determination of freein-air geometric efficiency in MDCT
A comparison of two methods for the determination of freein-air geometric efficiency in MDCT Theocharis Berris *1, Kostas Perisinakis 1,, Antonios E. Papadakis and John Damilakis 1, 1 Department of Medical
More informationAuthors: Cabral, Ricardo 1 ; Carvoeiras, Pedro 2 ; Fatana, João 2, ; Alves, Rita 1. 1 Centro Hospitalar Lisboa Norte - Hospital de Santa Maria; 2
Authors: Cabral, Ricardo 1 ; Carvoeiras, Pedro 2 ; Fatana, João 2, ; Alves, Rita 1. 1 Centro Hospitalar Lisboa Norte - Hospital de Santa Maria; 2 Medical Consult, SA; Establish a method to correlate image
More informationYinsheng Li 1, Peter Bannas 2, M.D., Perry Pickhardt M.D. 2, Meghan Lubner M.D. 2, Ke Li Ph.D. 1,2, and Guang-Hong Chen Ph.D. 1,2
Yinsheng Li 1, Peter Bannas 2, M.D., Perry Pickhardt M.D. 2, Meghan Lubner M.D. 2, Ke Li Ph.D. 1,2, and Guang-Hong Chen Ph.D. 1,2 1. Department of Medical Physics, University of Wisconsin-Madison 2. Department
More informationRadiology Physics Lectures: Digital Radiography. Digital Radiography. D. J. Hall, Ph.D. x20893
Digital Radiography D. J. Hall, Ph.D. x20893 djhall@ucsd.edu Background Common Digital Modalities Digital Chest Radiograph - 4096 x 4096 x 12 bit CT - 512 x 512 x 12 bit SPECT - 128 x 128 x 8 bit MRI -
More informationMaximizing clinical outcomes
Maximizing clinical outcomes Digital Tomosynthesis Dual Energy Subtraction Automated Long Length Imaging Improved image quality at a low dose Xray Xray Patented ISS capture technology promotes high sensitivity
More informationMaximum Performance, Minimum Space
TECHNOLOGY HISTORY For over 130 years, Toshiba has been a world leader in developing technology to improve the quality of life. Our 50,000 global patents demonstrate a long, rich history of leading innovation.
More informationData. Take the Lead in CT SOMATOM Sensation 64
Data Take the Lead in CT SOMATOM Sensation 64 Imaging of this quality, sharpness, speed and gives us the opportunity to study the human anatomy at a level that has only been dreamt about. Werner A. Bautz,
More informationDIAGNOSTIC ACCREDITATION PROGRAM. Radiology and CT Quality Control Procedures Workbook
DIAGNOSTIC ACCREDITATION PROGRAM Radiology and CT Quality Control Procedures Workbook Quality Control Procedures Radiography/CR/DR Safety Code 35 Summary For more detail about each quality control (QC)
More informationClinical Experience Using the Open Bore Multislice CT System Supria (16 slice CT) MEDIX VOL. 61 P.8 P.11
Clinical Experience Using the Open Bore Multislice CT System Supria (16 slice CT) Hiroki Kadoya Yukiko Kitagawa MEDIX VOL. 61 P.8 P.11 Clinical Experience Using the Open Bore Multislice CT System Supria
More informationQuantitation of clinical feedback on image quality differences between two CT scanner models
Received: 4 August 2016 Revised: 4 November 2016 Accepted: 12 December 2016 DOI: 10.1002/acm2.12050 MEDICAL IMAGING Quantitation of clinical feedback on image quality differences between two CT scanner
More informationRedefining Ergonomics
Samsung Electronics Co., Ltd. inspires the world and shapes the future with transformative ideas and technologies, redefining the worlds of TVs, smartphones, wearable devices, tablets, cameras, digital
More informationDual-Source Dual-Energy CT With Additional Tin Filtration: Dose and Image Quality Evaluation in Phantoms and In Vivo
Medical Physics and Informatics Original Research Primak et al. Dose and Image Quality of Dual-Energy DSCT Medical Physics and Informatics Original Research Andrew N. Primak 1,2 Juan Carlos Ramirez Giraldo
More informationImprovement of CT image quality with iterative reconstruction idose4
Improvement of CT image quality with iterative reconstruction idose4 Poster No.: C-0387 Congress: ECR 2014 Type: Scientific Exhibit Authors: M.-L. Olsson, K. Norrgren, M. Söderberg; Malmö/SE Keywords:
More informationT h e P h a n t o m L a b o r a t o r y
T h e P h a n t o m L a b o r a t o r y 1 CCT228 ATCM Phantom Manual Copyright 2017 WARRANTY THE PHANTOM LABORATORY INCORPORATED ( Seller ) warrants that this product shall remain in good working order
More informationIntroduction. Chapter 16 Diagnostic Radiology. Primary radiological image. Primary radiological image
Introduction Chapter 16 Diagnostic Radiology Radiation Dosimetry I Text: H.E Johns and J.R. Cunningham, The physics of radiology, 4 th ed. http://www.utoledo.edu/med/depts/radther In diagnostic radiology
More informationEnhanced Functionality of High-Speed Image Processing Engine SUREengine PRO. Sharpness (spatial resolution) Graininess (noise intensity)
Vascular Enhanced Functionality of High-Speed Image Processing Engine SUREengine PRO Medical Systems Division, Shimadzu Corporation Yoshiaki Miura 1. Introduction In recent years, digital cardiovascular
More informationMammography: Physics of Imaging
Mammography: Physics of Imaging Robert G. Gould, Sc.D. Professor and Vice Chair Department of Radiology and Biomedical Imaging University of California San Francisco, California Mammographic Imaging: Uniqueness
More informationBrilliance in everything Philips CT products and services
Brilliance in everything Philips CT products and services Ready for anything No one does more than Philips to help you gain the productivity you need with a comprehensive approach to CT that marries significant
More informationFOREWORD. Acknowledgements
ΠΑΝΕΠΙΣΗΜΙΟ ΠΑΣΡΩΝ Διαημημαηικό Πρόγραμμα Μεηαπηστιακών ποσδών ζηην Ιαηρική Φσζική Διπλωμαηική εργαζία «ΔΟΙΜΕΣΡΙΑ ΑΘΕΝΩΝ Ε ΕΞΕΣΑΕΙ ΤΠΟΛΟΓΙΣΙΚΗ ΣΟΜΟΓΡΑΦΙΑ ΠΟΛΛΑΠΛΩΝ ΣΟΜΩΝ» ηέλλα Γ. Θαλαζζινού Α.Μ : 1575
More informationDigital Imaging and Communications in Medicine (DICOM) Supplement 188: Multi-energy CT Images
Supplement 188: Multi-energy CT Images Page 1 2 4 6 Digital Imaging and Communications in Medicine (DICOM) 8 Supplement 188: Multi-energy CT Images 10 12 14 16 18 20 Prepared by: 22 DICOM Standards Committee,
More informationCT Basics: Image Quality Module 6
Module 6 For educational and institutional use. This transcript is licensed for noncommercial, educational inhouse or online educational course use only in educational and corporate institutions. Any broadcast,
More informationcomputed tomography, computed tomography dose index, dosimetry
Received: 18 January 2018 Revised: 6 April 2018 Accepted: 1 May 2018 DOI: 10.1002/acm2.12363 MEDICAL IMAGING Applying three different methods of measuring CTDI free air to the extended CTDI formalism for
More informationRaySafe X2. Effortless measurements of X-ray
RaySafe X2 Effortless measurements of X-ray At your fingertips We ve grown accustomed to intuitive interactions with our devices. After all, it s not the device that s most important, but what you can
More informationIndustry Breakthrough
Industry Breakthrough Dynamic SPECT Acquisition Quantifying Myocardial Blood Flow D-S P EC T Cardiac Imaging System Nuclear Cardiology in the 21st Century In the 21st century, most nuclear cameras are
More informationHalf value layer and AEC receptor dose compliance survey in Estonia
Half value layer and AEC receptor dose compliance survey in Estonia K. Kepler, A. Vladimirov Training Centre of Medical Physics, University of Tartu Testing Centre of the University of Tartu, Estonia E-mail:
More informationof sufficient quality and quantity
of sufficient quality and quantity The patient s body attenuates the beam as it passes though the body More energy is deposited in organs located near the entry of the beam than near the exit of the beam
More informationCOCIR SELF-REGULATORY INITIATIVE FOR MEDICAL IMAGING EQUIPMENT COMPUTED TOMOGRAPHY MEASUREMENT OF ENERGY CONSUMPTION
COCIR SELF-REGULATORY INITIATIVE FOR MEDICAL IMAGING EQUIPMENT COMPUTED TOMOGRAPHY MEASUREMENT OF ENERGY CONSUMPTION Revision: 1 Date: June 2015 Approved: June 2015 TABLE OF CONTENT 1. INTRODUCTION...
More informationExposure in Dental Radiology: A Comparison Between Intra-oral, Panoramic and Tomographic Examinations
Exposure in Dental Radiology: A Comparison Between Intra-oral, Panoramic and Tomographic Examinations S. Baechler 1, P. Monnin 1, A. Aroua 1, J.F. Valley 1, M. Perrier, P. Trueb 3, F.R. Verdun 1 1 University
More informationPET/CT Instrumentation Basics
/ Instrumentation Basics 1. Motivations for / imaging 2. What is a / Scanner 3. Typical Protocols 4. Attenuation Correction 5. Problems and Challenges with / 6. Examples Motivations for / Imaging Desire
More informationIndustry Breakthrough
Industry Breakthrough Dynamic SPECT Acquisition Quantifying Myocardial Blood Flow Nuclear Cardiology in the 21st Century In the 21st century, most nuclear cameras are still relying on a technology invented
More informationCT Basics: Data Acquisition Module 3
Module 3 Transcript For educational and institutional use. This transcript is licensed for noncommercial, educational inhouse or online educational course use only in educational and corporate institutions.
More informationArchitecture of Quality Imaging Mary K. Henne, MS, CNMT, RDMS, RVT Ultrasound Education Specialist GE Healthcare
Architecture of Quality Imaging Mary K. Henne, MS, CNMT, RDMS, RVT Ultrasound Education Specialist GE Healthcare 2 DOC1292532 Architecture of Quality Imaging Agile Acoustic Architecture E-Series and XDclear
More informationTruly flexible to meet your clinical needs
Truly flexible to meet your clinical needs 2 Adapting to meet your needs Flexible Fast and responsive Excellent image quality Designed with ergonomic efficiency Equipped with dose management tools 3 Three
More informationDiagnostic X-Ray Shielding
Diagnostic X-Ray Shielding Multi-Slice CT Scanners Using NCRP 147 Methodology Melissa C. Martin, M.S., FAAPM, FACR Therapy Physics Inc., Bellflower, CA AAPM Annual Meeting, Orlando, FL FL Refresher Course
More informationThe disclaimer on page 1 is an integral part of this document. Copyright November 30, 2017 by AAPM. All rights reserved.
DISCLAIMER: TO THE EXTENT ALLOWED BY LOCAL LAW, THIS INFORMATION IS PROVIDED TO YOU BY THE AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE, A NON-PROFIT ORGANIZATION ORGANIZED TO PROMOTE THE APPLICATION
More informationExposure Indices and Target Values in Radiography: What Are They and How Can You Use Them?
Exposure Indices and Target Values in Radiography: What Are They and How Can You Use Them? Definition and Validation of Exposure Indices Ingrid Reiser, PhD DABR Department of Radiology University of Chicago
More information2D, 3D CT Intervention, and CT Fluoroscopy
2D, 3D CT Intervention, and CT Fluoroscopy SOMATOM Definition, Definition AS, Definition Flash Answers for life. Siemens CT Vision Siemens CT Vision The justification for the existence of the entire medical
More informationPreclinical X-Ray Computed Tomography
Preclinical X-Ray Computed Tomography Marc Kachelrieß German Cancer Research Center (DKFZ) Heidelberg, Germany www.dkfz.de/ct Is CT a Molecular Imaging Modality? Imaging Modality Molecular Sensitivity
More informationWide beam CT dosimetry. Elly Castellano
Wide beam CT dosimetry Elly Castellano Outline revision: CT dose indices wide-beam CT: the end of the road for CTDI? the IEC rescue plan for CTDI 100 the american way AAPM report 111 better estimates of
More informationReport to 64 slice CT scanner comparison report version 13. September Health and social care working together.
Report 05068 32 to 64 slice CT scanner comparison report version 13 September 2005 www.pasa.nhs.uk/cep Health and social care working together About evaluation reports The Centre for Evidence-based Purchasing
More informationCT Scanner Dose Survey
CT Scanner Dose Survey Measurement Protocol Version 5.0 July 1997 Co-ordinated by ImPACT and The Medical Physics Department,, London SW17, UK. 0181-725-3366 CT Scanner Dose Survey: Measurement Protocol
More informationDiffraction-enhanced X-ray Imaging (DEXI) Medical Solutions. More information using less radiation
Diffraction-enhanced X-ray Imaging (DEXI) Medical Solutions More information using less radiation Medical Small Animal Security NDE/NDT Diffraction-Enhanced X-ray Imaging Medical Solutions Safe non-invasive
More informationDisclosures. Outline 7/31/2017. Current Implementation Status of IEC Standard : Exposure Index (EI) for Digital Radiography
Current Implementation Status of IEC Standard 62494-1: Exposure Index (EI) for Digital Radiography July 31, 2017 Ryan Fisher, PhD, DABR Katie Hulme, MS, DABR None Disclosures Outline Review of IEC Standard
More informationInfluence of different iteration levels in fourth generation iterative reconstruction technique on image noise in CT examinations of the neck
Influence of different iteration levels in fourth generation iterative reconstruction technique on image noise in CT examinations of the neck Poster No.: C-2205 Congress: ECR 2012 Type: Scientific Paper
More informationDigital Imaging and Communications in Medicine (DICOM) Supplement 188: Multi-energy CT Images
Supplement 188: Multi-energy CT Images Page 1 2 4 6 Digital Imaging and Communications in Medicine (DICOM) 8 Supplement 188: Multi-energy CT Images 10 12 14 16 18 20 Prepared by: 22 DICOM Standards Committee,
More informationQuality control of Gamma Camera. By Dr/ Ibrahim Elsayed Saad 242 NMT
Quality control of Gamma Camera By Dr/ Ibrahim Elsayed Saad 242 NMT WHAT IS QUALITY? The quality of a practice is to fulfill the expectations and demands from: Patient Clinicain Your self Quality assurance
More informationMulti-Access Biplane Lab
Multi-Access Biplane Lab Advanced technolo gies deliver optimized biplane imaging Designed in concert with leading physicians, the Infinix VF-i/BP provides advanced, versatile patient access to meet the
More informationCT Basics: Computed Tomography Fundamentals Module 1
Module 1 Transcript For educational and institutional use. This transcript is licensed for noncommercial, educational inhouse or online educational course use only in educational and corporate institutions.
More informationDigital radiography (DR) post processing techniques for pediatric radiology
Digital radiography (DR) post processing techniques for pediatric radiology St Jude Children s Research Hospital Samuel Brady, MS PhD DABR samuel.brady@stjude.org Purpose Review common issues and solutions
More informationAcceptance Testing of a Digital Breast Tomosynthesis Unit
Acceptance Testing of a Digital Breast Tomosynthesis Unit 2012 AAPM Spring Clinical Meeting Jessica Clements, M.S., DABR Objectives Review of technology and clinical advantages Acceptance Testing Procedures
More informationK-edge subtraction X-ray imaging with a pixellated spectroscopic detector
K-edge subtraction X-ray imaging with a pixellated spectroscopic detector Silvia Pani Department of Physics, University of Surrey Summary Hyperspectral imaging K-edge subtraction X-ray imaging for mammography
More informationCurrent technology in digital image production (CR/DR and other modalities) Jaroonroj Wongnil 25 Mar 2016
Current technology in digital image production (CR/DR and other modalities) Jaroonroj Wongnil 25 Mar 2016 Current technology in digital image production (CR/DR and other modalities) 2/ Overview Digital
More informationDOUBLE gated in vivo small animal cone beam micro
Low Dose Phase Correlated Cone Beam Micro CT of Small Animals Stefan Sawall, Frank Bergner, Robert Lapp, Markus Mronz, Marek Karolczak, Andreas Hess, and Marc Kachelrieß, Member, IEEE I. INTRODUCTION DOUBLE
More informationX-ray Tube and Generator Basic principles and construction
X-ray Tube and Generator Basic principles and construction Dr Slavik Tabakov - Production of X-rays OBJECTIVES - X-ray tube construction - Anode - types, efficiency - X-ray tube working characteristics
More informationReducing Radiation Exposure from Survey CT Scans
Reducing Survey CT Scan Exposure Pediatric Imaging Original Research Jennifer C. O Daniel 1 Donna M. Stevens 2 Dianna D. Cody 2 O Daniel JC, Stevens DM, Cody DD Received July 28, 2004; accepted after revision
More informationThe influence of bowtie filtration on cone-beam CT image quality
The influence of bowtie filtration on cone-beam CT image quality N. Mail Radiation Medicine Program, Princess Margaret Hospital, Toronto, Ontario M5G 2M9, Canada and Ontario Cancer Institute, University
More informationCardiac MR. Dr John Ridgway. Leeds Teaching Hospitals NHS Trust, UK
Cardiac MR Dr John Ridgway Leeds Teaching Hospitals NHS Trust, UK Cardiac MR Physics for clinicians: Part I Journal of Cardiovascular Magnetic Resonance 2010, 12:71 http://jcmr-online.com/content/12/1/71
More informationThe Most Popular CT in the World *
The Most Popular CT in the World * SOMATOM Emotion Datasheet for 16-slice configuration syngo CT 2009E Answers for life. * Based on the number of systems sold worldwide 2 SOMATOM Emotion Over 6,500 Emotion
More informationPhotomultiplier Tube
Nuclear Medicine Uses a device known as a Gamma Camera. Also known as a Scintillation or Anger Camera. Detects the release of gamma rays from Radionuclide. The radionuclide can be injected, inhaled or
More information