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MRSO Mock Test 1 Questions & answers
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MRSO Mock Test 1What pulse sequence will produce the most patient heating?
A. Inverse recovery sequence
B. Single shot fast spin echo
C. Conventional spin echo
D. Gradient Echo - ANS-B. Single shot fast spin echo
During acquisition, it is noticed that the T wave of the cardiac cycle is elevated. What is
this artifact called?
A. Magnetohydrodynamic Effect
B. Excitation
C. Teratogenesis
D. Magnetophosphenes - ANS-A. Magnetohyrdodynamic Effect
When can heating occur in a wire?
A. Only in ferrous object
B. When the transmitted wavelength is half of the B0 field strength or is a multiple of the
length of that
C. When objects get smaller
D. In small round metal objects - ANS-B. When the transmitted wavelength is half of the
B0 field strength or is a multiple of the length of that
What unit of measure is used for SAR?
A. A/1b
B. dB/dx
C. dB/dt
D. W/kg - ANS-D. W/kg
The IEC 60601-2-33 whole body normal operating mode is ________________ the
energy requirements limited in the first level controlled operating mode.
A. Triple
B. Double
,C. Half
D. Not comparable to - ANS-C. Half
Which of the following are recommended by the ACR guidance in MR Safety 2013 in
proper scanning of a patient?
A. Metal Detector
B. Ferromagnetic detection system
C. Written screening sheet
D. Patient Gown - ANS-B. Ferromagnetic detection system
C. Written screening sheet
D. Patient Gown
Using a headset and ear plugs will reduce the noise by how much?
A. By the NRR of headset
B. By the NRR of the headset and NRR of earplugs
C. 50 dB
D. By the NRR of the headset and the NRR of earplug divided by 2 - ANS-B. By the
NRR of the headset and NRR of earplugs
What is the FDA SAR limit for the whole body in first level controlled operating mode?
A. 7 W/kg for 6 min
B. 4 W/kg for 6min
C. 3 W/kg for 6 min
D. 8 W/kg for 6 min - ANS-B. 4 W/kg for 6 min
Which of the following is true of Zone IV? Select all that apply.
A. Should be noted with signage
B. No unsafe implants may cross the 5-guass unless implant is researched and
analyzed for risk
C. Contain metal detectors for implant identification
D. This area should be monitored by a level 2 MR personnel - ANS-A. Should be noted
with signage
B. No unsafe implants may cross the 5-guass unless implant is researched and
analyzed for risk
D. This area should be monitored by a level 2 MR personnel
, Pain at the injection site when gadolinium contrast is administered is considered what?
A. None of these choices
B. Anaphylaxis
C. An allergic reaction
D. A non-allergic reaction - ANS-D. Non allergic reaction
How long does it take to excrete gadolinium contrast from a patient with normal kidney
function?
A. 24 hours
B. 48 hours
C. 4 hours
D. 9 hours - ANS-A. 24 Hours
How many gauss are in one Tesla?
A. 10
B. 10,000
C. 100
D. 1,000 - ANS-B. 10,000
Gadolinium contains what kind of magnetism?
A. Super paramagnetic
B. Ferromagnetic
C. Paramagnetic
D. Diamagnetic - ANS-C. Paramagnetic
The T wave in the cardiac cycle represents what?
A. Heart Depolarization
B. None of the choices
C. Arrythmia
D. Heart Repolarization - ANS-D. Heart Repolarization
An energy deposition mode set to normal operation mode will allow heating in a patient
to what?
A. 0.5 deg C
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