| Question 1: Regarding linac-based absorbed dose to water calibrations, an understanding of k_Q uncertainties is important. When measurements were analyzed by Muir et al in 2010, how well did the experimental fit of k_Q across all NE2571 chambers in this study agree? |
| Reference: | Muir, B. R., and D. W. O. Rogers. "Monte Carlo calculations of, the beam quality conversion factor." Medical physics 37.11 (2010): 5939-5950. |
| Choice A: | 0.3% |
| Choice B: | 1.0% |
| Choice C: | 1.5% |
| Choice D: | 2.0% |
| Question 2: What is the largest component of the uncertainty in a reference dosimetry measurement of a linear accelerator, assuming that a reference-class chamber is used? |
| Reference: | McEwen, Malcolm, et al. "Addendum to the AAPMˈs TG‐51 protocol for clinical reference dosimetry of high‐energy photon beams." Medical physics 41.4 (2014). |
| Choice A: | k_Q fator |
| Choice B: | stability of linear accelerator |
| Choice C: | charge measurement reproducibility |
| Choice D: | N_D,W chamber calibration |
| Question 3: The Bureau International des Poids et Mesures: |
| Reference: | www.bipm.org |
| Choice A: | was set up as a result of the Metre Convention in 1875 |
| Choice B: | oversees comparison programs for base and derived quantities between national laboratories |
| Choice C: | organizes consultative committees for a range of application/measurement areas |
| Choice D: | carries out a program of work to maintain and develop standards for ionizing radiation dosimetry |
| Choice E: | all of the above |
| Question 4: Degrees of equivalence between national laboratories: |
| Reference: | McEwen et al.: TG-51 photon addendum, Med Phys, 041501-3 2014; https://www.bipm.org/en/cipm-mra/kcdb.html |
| Choice A: | are required by certain countries to meet ionizing radiation regulations |
| Choice B: | are bilateral agreements whereby one country recognizes the standards of another |
| Choice C: | are conversion factors for temperature scales between Canada and the US |
| Choice D: | quantitatively demonstrate the metrological agreement of two primary standards |
| Question 5: What systematic accuracy is necessary for optimal radiation therapy: |
| Reference: | Accuracy Requirements and Uncertainties in Radiotherapy. IAEA Human Health Series Report 31. IAEA. 2016. |
| Choice A: | 1-2% |
| Choice B: | 3% |
| Choice C: | 5% |
| Choice D: | 7% |
| Choice E: | 10% |
| Question 6: The Scope of Accreditation from an accredited laboratory describes: |
| Reference: | “Criteria for Accreditation of Dosimetry Calibration Laboratories by the American Association of Physicists in Medicine”, Rev. 11, July 2006. |
| Choice A: | the procedures/protocols and processes used to calibrate reference class instruments and/or long lived isotopes. |
| Choice B: | only the measurement uncertainty of the calibration criteria/protocols for which the laboratory has been accredited. |
| Choice C: | what class of instruments and/or isotopes can be calibrated, the range of the calibration and the associated uncertainty of the calibration |
| Choice D: | instruments and/or isotopes that can and cannot be calibrated. |
| Choice E: | all of the above |
