| Question 1: MRI Safety Zone IV is the scanner room itself. Every entrance to Zone 4 must have a sign stating? |
| Reference: | Kanal et. al. ACR Guidance Document on MR Safe Practices: 2013. Journal of Magnetic Resonance Imaging 37:501–530 (2013) |
| Choice A: | The magnet is always on. |
| Choice B: | Danger – MRI Zone 4. |
| Choice C: | Caution – MRI Zone 4. |
| Choice D: | A and B only. |
| Question 2: Equipment, objects, and devices entering Zone III or Zone IV must be evaluated and labeled appropriately for compatibility with the MRI environment. The possible labels are: |
| Reference: | ASTM F2503-13. Standard Practice for Marking Medical Devices and Other Items for Safety in the Magnetic Resonance Environment. |
| Choice A: | MR Safe. |
| Choice B: | MR Unsafe. |
| Choice C: | MR Conditional |
| Choice D: | A and B only |
| Choice E: | All of the above. |
| Question 3: MRI related thermal injuries (RF-induced burns) may result from _____. |
| Reference: | ASTM F2182. Standard test method for measurement of radiofrequency induced heating on or near passive implants during magnetic resonance imaging. |
| Choice A: | Conductive paths formed by patient tissues. |
| Choice B: | Direct contact with the scanner bore. |
| Choice C: | Rapidly switching magnetic field gradients. |
| Choice D: | All of the above. |
| Choice E: | A and B only. |
| Question 4: A device or object is classified as MRI-Safe if it is: |
| Reference: | Establishing Safety and Compatibility of Passive Implants in the Magnetic Resonance (MR) Environment – Guidance for Industry and Food and Drug Administration Staff (2013) |
| Choice A: | Not magnetic. |
| Choice B: | Not metallic. |
| Choice C: | Not electrically conductive. |
| Choice D: | All of the above. |
| Choice E: | A and b only. |
| Question 5: Per American College of Radiology recommendations, who is permitted to enter Zone IV (the room that contains the magnet)? |
| Reference: | Kanal, E., Barkovich, A.J., Bell, C., Borgstede, J.P., Bradley, W.G., Froelich, J.W., Gimbel, J.R., Gosbee, J.W., Kuhni‐Kaminski, E., Larson, P.A. and Lester, J.W., 2013. ACR guidance document on MR safe practices: 2013. Journal of Magnetic Resonance Imaging, 37(3), pp.501-530.
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| Choice A: | Any member of the general public. |
| Choice B: | Unscreened radiation therapy patients. |
| Choice C: | Non-MR Personnel. |
| Choice D: | Level 2 MR Personnel. |
| Question 6: When considering the effect of the magnetic field on linear accelerator reference dosimetry, the smallest magnetic field correction factors are found when the chamber is parallel to the magnetic field? |
| Reference: | Magnetic field correction factors varied in magnitude with detector orientation with the smallest corrections found when the chamber was parallel to the magnetic field.
Reference: O’Brien, D.J., Roberts, D.A., Ibbott, G.S., Sawakuchi, G.O. Reference dosimetry in magnetic fields: formalism and ionization chamber correction factors. Med Phys., 43(8):4915
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| Choice A: | True. |
| Choice B: | False. |
