2019 AAPM Annual Meeting
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Session Title: 5D imaging and Treatment Planning for Radiation Therapy
Question 1: How do the doses for the published MBCT (5DCT) compare against commercial 4DCT?
Reference:Low DA, White BM, Lee PP, et al. A novel CT acquisition and analysis technique for breathing motion modeling. Phys Med Biol. 2013;58(11):L31-36
Choice A:They are nearly the same
Choice B:The MBCT doses are much greater than the 4DCT doses
Choice C:The 4DCT doses are much greater than the 5DCT doses
Choice D:The MBCT protocol does not deliver any dose
Question 2: What is one benefit of MBCT (5DCT) over 4DCT?
Reference:Dou TH, Thomas DH, O'Connell DP, Lamb JM, Lee P, Low DA. A Method for Assessing Ground-Truth Accuracy of the 5DCT Technique. Int J Radiat Oncol Biol Phys. 2015;93(4):925-933;
Choice A:Breathing motion blurring is better with MBCT than 4DCT
Choice B:MBCT is applicable on a broader range of CT scanners than 4DCT
Choice C:MBCT does not require deformable image registration
Choice D:MBCT provides quantitative information for treatment planning
Question 3: What is one benefit of 4DCT over MBCT (5DCT)?
Reference:D. Thomas, J. Tan, J. Neylon, T. Dou, D. O’Connell, M. McNitt-Gray, P. Lee, J. Lamb, and D.A. Low, Investigating the minimum scan parameters required to generate free-breathing motion artefact-free fast-helical CT, Br. J. Radiol. 91 (2018);
Choice A:4DCT provides images with no sorting artifacts
Choice B:4DCT is widely commercially available
Choice C:4DCT enables quantitative motion analysis
Choice D:4DCT provides low-noise CT images
Question 4: What one of the following statements is INCORRECT about 4D-MRI?
Reference:Stemkens B1, Paulson ES, Tijssen RHN. Nuts and bolts of 4D-MRI for radiotherapy. Phys Med Biol. 2018 Oct 23;63(21):21TR01. doi: 10.1088/1361-6560/aae56d.
Choice A:Is also called respiratory correlated MRI
Choice B:Has better soft-tissue contrast than 4D-CT
Choice C:Is routinely used in the clinic for tumor motion management
Choice D:Has inconsistent performance among patients
Question 5: What is VPGRT?
Reference:http://www.medphys.org/PhDAbstracts/bingqiguophd.pdf
Choice A:Virtual Reality Guided Radiation Therapy
Choice B:Visional Patient Guided Radiation Therapy
Choice C:Very Patient coordination Guided Radiation Therapy
Choice D:Virtual Patient Guided Radiation Therapy
Question 6: What is the 5th dimensional of VPGRT?
Reference:Chapter 15 in Recent Advances and Applications of Dosimetry, Nova Medical & Health, ISBN: 978-1-53613-759-0
Choice A:Velocity of air flow
Choice B:Air pressure of the lung
Choice C:Organ deformation
Choice D:All of above
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