MRSO: Exam 1 Questions with Correct Answers 2024/2025
The control room is found where?
- Zone I
- Zone II
- Zone III
- Zone IV - Correct Answers C. Zone III
- Fourier transformation
- Lenz's force
- Ohm's law
- Larmor equation - Correct Answers b. Lenz's force
- Metal detector
- I, III, IV
- I, II, III, IV
- II, III, IV
- III - Correct Answers c. II, III, IV
- 8 W/kg for 15 mins
- 4 W/kg for 15 mins
- 3 W/kg for 10 mins
- 7 W/kg for 20 mins - Correct Answers b. 4 W/kg for 15 mins 1 / 2
Which of the following describe when a non-ferrous object is repulsed by static magnetic field?
Which of the following are recommended by the ACR Guidance document in MR safety 2013 in proper scanning of a patient?
II. Ferromagnetic detection system III. Written screening sheet IV. Patient gown
What is the FDA SAR limit for the whole body in first level controlled operating mode?
Gadolinium contains what kind of magnetism?
- Diamagnetic
- Paramagnetic
- Ferromagnetic
- Super paramagnetic - Correct Answers b. Paramagnetic
- This area should be monitored by a level 2 MR personnel
- Should be noted with signage
- Contain metal detectors for implant identification
- No unsafe implants may cross the 5-gauss unless the implant is researched and analyzed for risk -
- Further away from isocenter in the gantry
- At the level of the table when it is advanced
- At isocenter
- Outside the gantry near the 5 gauss line - Correct Answers a. Further away from the isocenter in
- Nystagmus
- Heating
- Magnetophosphenes
- Magnetohydrodynamic effect - Correct Answers c. Magnetophosphenes
- Inverse field
- Equilibrium
- / 2
Which of the following is true of Zone IV? Select all that apply.
Correct Answers a, b, d Where will peripheral nerve stimulation be the strongest?
the gantry A patient is advanced in the MRI scanner very quickly and experiences a sensation of flashing lights in their visual field. What are they experiencing?
What is the name for the direction of the vector of the static magnetic field?