CAMRT MRI in Practice MRI Safety Chapter 10 Exam Question With Detailed Answers

What are the four safety zones - ACCURATE ANSWER-Zone 1: public area, hallways etc Zone 2: Patients screened here, under supervision not free to roam. Zone 3: physically restricted entry, key locks. Screened patients and personnel only. Zone 4: magnet room What is the difference between level one personnel and level two personnel? - ACCURATE ANSWER-Level one are those with minimal safety MRI training, office staff etc. Level two is techs, rads, nursing staff with extensive training. How is SAR calculated? - ACCURATE ANSWER-The prescan calibration applies short bursts of RF that are needed to create 90 degree and 180 degree flip angle. The amount of energy required for all the pulses in the sequence is summed, divided by the TR, and then divided by the patient's weight to calculate whole body SAR. Which zone is restricted by lock? - ACCURATE ANSWER-3 Which zones can level 1 personnel enter? - ACCURATE ANSWER-all zones Which zones can level 1 personnel accompany a non MRI personnel to? - ACCURATE ANSWER-3