Question 1: A major objective of E2E QA is to: |
Reference: | Schreiner LJ. End to End QA in Image Guided and Adaptive Radiation Therapy. J.Phys.: Conf. Ser. 1305 012062 (5pp), 2019. doi:10.1088/1742‐6596/1305/1/012062 |
Choice A: | Make treatment unit commissioning more efficient |
Choice B: | Provide modelling data for treatment planning system commissioning |
Choice C: | Establish a methodology that tests whether all components in the treatment process
function as intended |
Choice D: | Improve primary beam calibration |
Question 2: Which two statements below correctly report observations from IROC phantom based E2E
testing? |
Reference: | Followill DS, Clark CH, and Kron T Audits using end‐to‐end tests. 2018 In Clinical 3D Dosimetry in
Modern RadiationTherapy Mijnheer B (ed) Boca Raton: CRC Press.
Kry SF, Molineu A, Kerns JR, et al. Institutional patient‐specific IMRT QA does not predict
unacceptable plan delivery. Int J Radiat Oncol Biol Phys. 2014;90(5):1195‐1201.
doi:10.1016/j.ijrobp.2014.08.334 |
Choice A: | Over the years the pass rate for IROC phantom tests has remained constant with ~75% of deliveries passing within acceptance criteria |
Choice B: | Not all treatment planning algorithms have given the correct heterogeneity corrections when used for lung RT planning |
Choice C: | More than 125 of the ~540 institutions that delivered radiation to an IROC E2E test phantom failed the delivery criteria on their first attempt |
Choice D: | IROC E2E test outcomes are well predicted by In‐house patient specific QA results |
Choice E: | all of the above are true |
Choice F: | b and c are true |
Question 3: An in-house E2E program designed to test all components of a specific
image guided adaptive radiation therapy protocol should involve: |
Reference: | Schreiner LJ. End to End QA in Image Guided and Adaptive Radiation Therapy. J.
Phys.: Conf. Ser. 1305 012062 (5pp), 2019. doi:10.1088/1742‐6596/1305/1/012062 |
Choice A: | The complete treatment team including planning therapists, dosimetrists,
treatment therapists, medical physicists and radiation oncologists |
Choice B: | Only medical physicists as they have the expertise to prepare the phantoms and dosimeters therein |
Choice C: | Only therapists as they implement the many steps in the treatment process |
Choice D: | Individuals from an external practice to ensure tests are unbiased |
Question 4: Which of the statements below is false: |
Reference: | Schreiner LJ. End to End QA in Image Guided and Adaptive Radiation Therapy. J. Phys.: Conf. Ser. 1305 012062 (5pp), 2019. doi:10.1088/1742-6596/1305/1/012062
Followill DS, Clark CH, and Kron T Audits using end-to-end tests. 2018 In Clinical 3D Dosimetry in Modern RadiationTherapy Mijnheer B (ed) Boca Raton: CRC Press |
Choice A: | E2E testing cannot fully replace conventional physics QA since hardware and technical systems must be maintained to high standards a priori |
Choice B: | A full understanding of the technical functioning of equipment, supported by well-established QA records, is needed to specify point of breakdown if E2E testing fails |
Choice C: | Regular (quarterly, bi-annually, etc.) performance of E2E QA would ensure sustained adherence to the process protocols at the high levels adopted in the initial commissioning and implementation of advanced IGART techniques |
Choice D: | It is not possible to obtain phantoms suitable for valid E2E testing of realistic dose deliveries |
Question 5: What is the main advantage to verifying isocenter accuracy using a 3D dosimeter which can be read out by on-board KV-CBCT ? |
Reference: | Pant K, Umeh C, Oldham M, Floyd S, Giles W, Adamson J. Comprehensive radiation and imaging isocenter verification using NIPAM kV‐CBCT dosimetry. Medical Physics, 2020, 47(3), 927-936. doi: 10.1002/mp.14008. Epub 2020 Jan 28. |
Choice A: | Higher spatial resolution |
Choice B: | Can quantify the coincidence of both imaging and treatment isocenters |
Choice C: | Shorter measurement time |
Question 6: When would 3D verification of isocenter accuracy be most appropriate ? |
Reference: | Pant K, Umeh C, Oldham M, Floyd S, Giles W, Adamson J. Comprehensive radiation and imaging isocenter verification using NIPAM kV‐CBCT dosimetry. Medical Physics, 2020, 47(3), 927-936. doi: 10.1002/mp.14008. Epub 2020 Jan 28 |
Choice A: | Commissioning of a linac |
Choice B: | Commissioning of a new radiosurgery technique |
Choice C: | Routine pre-treatment patient QA |
Choice D: | Both a and b |