| Question 1: Which of the following equipment is/are commonly associated with an MR-simulator?
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| Reference: | Glide-Hurst, C.K., Wen, N., Hearshen, D., Kim, J., Pantelic, M., Zhao, B., Mancell, T., Levin, K., Movsas, B., Chetty, I.J. and Siddiqui, M.S., 2015. Initial clinical experience with a radiation oncology dedicated open 1.0 T MR-simulation. Journal of Applied Clinical Medical Physics, 16(2).
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| Choice A: | Flat table top. |
| Choice B: | External laser system. |
| Choice C: | Larger bores. |
| Choice D: | All of the above. |
| Question 2: The largest discrepancy using an MR-only workflow for prostate cancer photon dose calculation has been shown to come from which of the following sources?
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| Reference: | Kim J, Garbarino K, Schultz L, Levin K, Movsas B, Siddiqui MS, Chetty IJ, Glide-Hurst C. Dosimetric evaluation of synthetic CT relative to bulk density assignment-based magnetic resonance-only approaches for prostate radiotherapy. Radiation Oncology. 2015 Nov 24;10(1):239.
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| Choice A: | Presence of large rectal air pockets. |
| Choice B: | Bony anatomy. |
| Choice C: | Bladder filling. |
| Choice D: | Bowel falling into the field. |
| Question 3: Which of the following items can cause geometric distortion in MRI images?
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| Reference: | Price RG, Kadbi M, Kim J, Balter J, Chetty IJ, Glide-Hurst CK. Characterization and correction of gradient nonlinearity induced distortion on a 1.0 T open bore MR-SIM. Medical Physics. 2015 Oct;42(10):5955-60. doi: 10.1118/1.4930245. |
| Choice A: | Magnetic field inhomogeneity. |
| Choice B: | Insufficient Gradient strength. |
| Choice C: | Gradient nonlinearity. |
| Choice D: | A & B. |
| Choice E: | A & C. |
| Question 4: According to ACR 2015 MRI quality control manual, which of the following techniques can be used to evaluate magnetic field homogeneity?
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| Reference: | American College of Radiology 2015 Magnetic Resonance Imaging Quality Control Manual. |
| Choice A: | Spectral peak method. |
| Choice B: | Bandwidth difference method. |
| Choice C: | Phase map method. |
| Choice D: | Phase difference map method. |
| Choice E: | All of the above. |
| Question 5: True or False? The designation of MRI magnetic field safety zones used for diagnostic MR imaging facilities should also be used for an MRI unit used for oncology MR imaging and located in a radiation oncology department.
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| Reference: | ACR Guidance Document on MR Safe Practices: 2013 JOURNAL OF MAGNETIC RESONANCE IMAGING 37:501–530 (2013) Expert Panel on MR Safety: Kanal E, Barkovich AJ, Bell C, et al.
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| Choice A: | True. |
| Choice B: | False. |
| Question 6: Which one of the following scenarios represents the greatest potential for risk of injury to a radiation treatment patient undergoing an MR imaging procedure in the radiation oncology clinic:
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| Reference: | ACR Guidance Document on MR Safe Practices: 2013 JOURNAL OF MAGNETIC RESONANCE IMAGING 37:501–530 (2013) Expert Panel on MR Safety: Kanal E, Barkovich AJ, Bell C, et al.
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| Choice A: | Satisfactory completion of two pre-imaging safety screenings for foreign bodies, implanted devices and allergies to MR contrast. |
| Choice B: | Thermal injury due to induced currents for an uncharacterized metallic device attached directly to the patient. |
| Choice C: | MR imaging followed immediately by ionizing radiation treatment. |
| Choice D: | Administration of 2 times the normal amount of gadolinium contrast, as approved by the physician after verification of the patient’s kidney function. |
