2018 AAPM Annual Meeting
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Session Title: Session in Memory of Phil Heintz: Patient Dose Calculations in Imaging - Fluoro, CT, and Fetal
Question 1: What is dose metric is useful for comparing the average dose within a scan volume from different acquisition parameters?
Reference:1. American Association of Physicists in Medicine. “The Measurement, Reporting, and Management of Radiation Dose in CT.” Report 93. American Association of Physicists in Medicine, 2008 2. American Association of Physicists in Medicine. “Size-Specific Dose Estimates (SSDE) in Pediatric and Adult Body CT Examinations.” Report 204. American Association of Physicists in Medicine, 2011
Choice A:CTDIVOL
Choice B:DLP
Choice C:SSDE
Question 2: What dose metric is useful for comparing the risk from different CT imaging procedures?
Reference:1. International Council on Radiation Protection. “2007 Recommendations of the International Commission on Radiological Protection.” Publication 103. International Commission on Radiation Protection , 2007 2. International Council on Radiation Protection. “Radiological Protection in Medicine.” Publication 105. International Commission on Radiation Protection , 2008
Choice A:CTDIVOL
Choice B:DLP
Choice C:SSDE
Choice D:Effective dose
Question 3: For interventional and neurointerventional studies, what the typical ratio of peak skin dose to cumulative dose?
Reference:Radiation Doses in Interventional Radiology Procedures: The RAD-IR Study Part II: Skin Dose. Donald L. Miller, MD, Stephen Balter, PhD, Patricia E. Cole, PhD, et al. J Vasc Interv Radiol 2003; 14:977–990.
Choice A:0.001-0.05
Choice B:0.6-0.8
Choice C:0.9-1.0
Choice D:1.1-2.5
Question 4: What dose metric best correlates with peak skin dose?
Reference:Radiation Doses in Interventional Radiology Procedures: The RAD-IR Study Part II: Skin Dose. Donald L. Miller, MD, Stephen Balter, PhD, Patricia E. Cole, PhD, et al. J Vasc Interv Radiol 2003; 14:977–990.
Choice A:CAK
Choice B:Fluoroscopic Time
Choice C:KAP
Choice D:Number of Cine Runs
Question 5: Fetal dose levels above what threshold may pose a risk for some deterministic effects:
Reference:ACR practice guideline for imaging pregnant or potentially pregnant adolescents and women with ionizing radiation (https://www.acr.org/-/media/ACR/Files/Practice-Parameters/pregnant-pts.pdf) -Wagner, et al., Exposure of the pregnant patient to diagnostic radiations: a guide to medical management, 2ed
Choice A:40 mGy
Choice B:60 mGy
Choice C:80 mGy
Choice D:100 mGy
Question 6: Most standard nuclear medicine procedures produce fetal radiation doses below:
Reference:Bural et al. Mol Imaging Radionul Ther 21(1) 2012, 1-5
Choice A:20 mSv
Choice B:50 mSv
Choice C:75 mSv
Choice D:100 mSv
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