2018 AAPM Annual Meeting
Back to session list

Session Title: MPPGs and Their Impact On Clinical Practice
Question 1: The ACR requires annual review of all of the following protocols EXCEPT:
Reference:ACR CT Quality Control Manual, page 54.
Choice A:Adult Head
Choice B:Adult Abdomen
Choice C:Pediatric Head (1 Year Old)
Choice D:Cardiac CTA
Choice E:High Resolution Chest
Question 2: MPPG 1a recommends the following members for a Protocol Review team EXCEPT:
Reference:Cody, DD, et.al., AAPM Medical Physics Practice Guideline 1.a: CT Protocol Management and Review Practice Guideline. J Appl Clin Med Phys 14(5):3-12, 2013.
Choice A:Radiologist
Choice B:Qualified Medical Physicist
Choice C:Lead CT Technologist
Choice D:Senior Member of Administration
Choice E:Manufacturer’s Applications Specialist
Question 3: Which of the following individuals is responsible for the commissioning of treatment planning systems in a clinical setting?
Reference:Smilowitz, JB, et.al., AAPM Medical Physics Practice Guideline 5.a.: Commissioning and QA of Treatment Planning Dose Calculations - Megavoltage Photon and Electron Beams. J Appl Clin Med Phys 16(5): 14-34, 2015.
Choice A:Dosimetrists
Choice B:Qualified Medical Physicist (QMP)
Choice C:Vendor service engineer
Choice D:Radiation Oncologist
Question 4: What is the process for modeling the parameters of the treatment beam in a treatment planning system?
Reference:MPPG 5a
Choice A:One-time process.
Choice B:Iterative process, accepting compromises considering the expected scope of clinical use .
Choice C:Use the parameters from a similar model system.
Choice D:Make two measurements and average.
Question 5: When validating the treatment beam modeled in the TPS, measured points should be compared to calculated points at multiple depths, and within the:
Reference:MPPG 5a.
Choice A:High-dose region.
Choice B:Penumbra.
Choice C:Low-dose tail regions.
Choice D:All of the above.
Question 6: Considering that diagnostic medical procedures result in effective doses that are typically lower than 100 mSv, which of the following statements are TRUE:
Reference:AAPM PP 25-B: AAPM Position Statement on Radiation Risks from Medical Imaging procedures.
Choice A:Describing potential radiation risks using predictions of hypothetical cancer incidence and deaths can lead some patients to fear or refuse appropriate medical imaging.
Choice B:When the procedures are appropriate, the anticipated benefits to the patient are highly likely to outweigh any small potential risks.
Choice C:If a patient refuses a diagnostic procedure due to concerns of radiation dose, it is sufficient to say the dose is very low without explaining the medical benefit of the procedure.
Choice D:d. A and B
Choice E:e. All of the above
Question 7: The air kerma-area product (PKA) and reference incident air kerma (Ka,r) are useful dose metrics in fluoroscopically-guided procedures. Indicate which of the following is FALSE:
Reference:NCRP Report 168. Radiation Dose Management for Fluoroscopically-guided Interventional Procedures. 2010. pp 89-93.
Choice A:PKA is a measure of the total x-ray energy absorbed by the patient. It is therefore an indicator of stochastic risk from fluoroscopically-guided interventional procedures.
Choice B:The relationship between displayed Ka,r and peak skin dose depends on the clinical procedure and how the physician maneuvers the x-ray equipment during the case.
Choice C:PKA can be used as an indicator of how often the beam projection angle was changed during the procedure to spread the dose over larger areas of the skin.
Choice D:Measures that reduce total radiation dose (PKA) will also reduce peak skin dose.
Question 8: Regarding Reference Levels (RLs) and Achievable Administered Activity (AAA) in Nuclear Medicine, indicate which of the following is FALSE:
Reference:ACR–AAPM Practice Parameter for Reference Levels and Achievable Administered Activity for Nuclear Medicine and Molecular Imaging.
Choice A:A RL is an investigational (action) level that identifies higher than typical administered activities for routine nuclear medicine and molecular imaging procedures.
Choice B:If a facility or practice consistently exceeds an RL, it should review its procedures and equipment to determine if acceptable image quality can be achieved with a lower administered activity.
Choice C:For pediatric procedures, manufacturers recommend a standard administered activity based on a standard 5 year-old or 45 pound child in their package insert as required by the US Food and Drug Administration.
Choice D:When modifying administered activity, image quality must be maintained at an appropriate level as administered activity is decreased.
Question 9: Which of the following TG-142 tests were not included in the minimum set of recommended tests because of a low RPN score?
Reference:Smith, K, et. al., AAPM Medical Physics Practice Guideline 8.a: Linear accelerator performance tests, J Appl Clin Med Phys 18(4):23-39, 2017.
Choice A:ODI
Choice B:Field-size/cone specific output factors
Choice C:Photon output vs. dose rate
Choice D:Electron beam energy
Question 10: Which of the following statements is NOT true regarding MPPG 8.a:
Reference:MPPG 8a
Choice A:It does not require specialized equipment beyond what is typically used for “traditional” QA.
Choice B:Though MMPG 8 attempts generate a set of tests in the spirit of TG-100 for the “every clinic,” the authors encourage each clinic create their own set of tests based on TG-100.
Choice C:MPPG8a is not an exhaustive list of tests one should perform in his clinic.
Choice D:Vendor QA and safety tests are generally a complete and comprehensive set of tests.
Back to session list