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 |