MRSO Exam Prep Latest Update 2025-2026 150
Questions and 100% Verified Correct Answers
Guaranteed A+
ACR Guidelines for orbit screening: - CORRECT ANSWER: "All patients who have a
history of orbit trauma by
a potential ferromagnetic foreign body for which
they sought medical attention are to have their
orbits cleared by either plain X-ray orbit films
(2 views) or by a radiologist's review and
assessment of contiguous cut prior CT or MR
images (obtained since the suspected traumatic
event) if available."
ACR Guidance on MR Safe Practice
Pg 6
"The results of such (portable metallic/partially metallic object) testing, as well as the
date, time, and name of the tester, and methodology used for that particular device,
should be documented in writing. If a device has not been tested, or if its MR
compatibility or safety status is unknown, it should not be permitted unrestricted access
to Zone ____." - CORRECT ANSWER: documented in writing / 3
1 mT = _______________ Gauss - CORRECT ANSWER: 1/1,000 T (or 10 (-3) T) = 10
G
1 T/m = ______ g/cm - CORRECT ANSWER: 100 g/cm
,1 Tesla = ______________ Gauss - CORRECT ANSWER: 1 Tesla = 1000 gauss
100 W-min/kg (6000 J/kg) - CORRECT ANSWER: SED limit for patients with thermal
regulation compromise - may suffer physiological stress or tissue damage. 25 min
continuous scanning at 4 W/kg (1st Level Controlled)
50 min continuous scanning at 2 W/kg (Normal Mode)
240 W-min/kg (14440 J/kg)* - CORRECT ANSWER: Research shows that this level will
produce a
temperature rise to 430 C (1090 F) above which
patient with normal thermal regulation may
suffer tissue damage
1 Hr continuous scanning at 4 W/kg (1st Level Controlled)
2 Hr continuous scanning at 2 W/kg (Normal Mode)
3 types of metals - CORRECT ANSWER: Austinitic, Martenitic, Ferritic
5 G = ___ mT - CORRECT ANSWER: 5 G = 0.5 mT
A fixed difference in a magnetic field across space - CORRECT ANSWER: Spatial
Gradient
ACR - MRI Safety during pregnancy - CORRECT ANSWER: Can be accepted at any
stage of pregnancy. Level 2-designated attending radiologist to confer with ordering
physician and determine that the risk-vs-benefit ratio to the patient warrants the study
ACR states informed consent in pregnant patients is / is not required - CORRECT
ANSWER: is not required.
, American Board of Magnetic Resonance Safety ABMRS provides MR Safety
Credentialing for: - CORRECT ANSWER: MR Medical Director (MRMD)
MR Safety Officers (MRSO)
MR Safety Experts (MRSE)
An item that poses no known hazards
resulting from exposure to any MR environment - CORRECT ANSWER: MR Safe
An item which poses unacceptable risks
to the patient, medical staff or other
persons within the MR environment - CORRECT ANSWER: MR Unsafe
An item with demonstrated safety
in the MR environment within defined conditions - CORRECT ANSWER: MR
Conditional
Any area 5 gauss or higher is zone ________ and must have _________ access -
CORRECT ANSWER: 4 - restricted access
Any metallic object will never be labeled as - CORRECT ANSWER: MRI Safe
B1 is - CORRECT ANSWER: RF Power
Big Gradients allow smaller.. - CORRECT ANSWER: FOV, Shorter echo times, thinner
slices
Biologic effects of Static magnetic field: - CORRECT ANSWER: Vertigo, Metallic taste,
Magnetophosphenes, Magnetohydromagnetic effect, EKG perturbances, nystagmus
Questions and 100% Verified Correct Answers
Guaranteed A+
ACR Guidelines for orbit screening: - CORRECT ANSWER: "All patients who have a
history of orbit trauma by
a potential ferromagnetic foreign body for which
they sought medical attention are to have their
orbits cleared by either plain X-ray orbit films
(2 views) or by a radiologist's review and
assessment of contiguous cut prior CT or MR
images (obtained since the suspected traumatic
event) if available."
ACR Guidance on MR Safe Practice
Pg 6
"The results of such (portable metallic/partially metallic object) testing, as well as the
date, time, and name of the tester, and methodology used for that particular device,
should be documented in writing. If a device has not been tested, or if its MR
compatibility or safety status is unknown, it should not be permitted unrestricted access
to Zone ____." - CORRECT ANSWER: documented in writing / 3
1 mT = _______________ Gauss - CORRECT ANSWER: 1/1,000 T (or 10 (-3) T) = 10
G
1 T/m = ______ g/cm - CORRECT ANSWER: 100 g/cm
,1 Tesla = ______________ Gauss - CORRECT ANSWER: 1 Tesla = 1000 gauss
100 W-min/kg (6000 J/kg) - CORRECT ANSWER: SED limit for patients with thermal
regulation compromise - may suffer physiological stress or tissue damage. 25 min
continuous scanning at 4 W/kg (1st Level Controlled)
50 min continuous scanning at 2 W/kg (Normal Mode)
240 W-min/kg (14440 J/kg)* - CORRECT ANSWER: Research shows that this level will
produce a
temperature rise to 430 C (1090 F) above which
patient with normal thermal regulation may
suffer tissue damage
1 Hr continuous scanning at 4 W/kg (1st Level Controlled)
2 Hr continuous scanning at 2 W/kg (Normal Mode)
3 types of metals - CORRECT ANSWER: Austinitic, Martenitic, Ferritic
5 G = ___ mT - CORRECT ANSWER: 5 G = 0.5 mT
A fixed difference in a magnetic field across space - CORRECT ANSWER: Spatial
Gradient
ACR - MRI Safety during pregnancy - CORRECT ANSWER: Can be accepted at any
stage of pregnancy. Level 2-designated attending radiologist to confer with ordering
physician and determine that the risk-vs-benefit ratio to the patient warrants the study
ACR states informed consent in pregnant patients is / is not required - CORRECT
ANSWER: is not required.
, American Board of Magnetic Resonance Safety ABMRS provides MR Safety
Credentialing for: - CORRECT ANSWER: MR Medical Director (MRMD)
MR Safety Officers (MRSO)
MR Safety Experts (MRSE)
An item that poses no known hazards
resulting from exposure to any MR environment - CORRECT ANSWER: MR Safe
An item which poses unacceptable risks
to the patient, medical staff or other
persons within the MR environment - CORRECT ANSWER: MR Unsafe
An item with demonstrated safety
in the MR environment within defined conditions - CORRECT ANSWER: MR
Conditional
Any area 5 gauss or higher is zone ________ and must have _________ access -
CORRECT ANSWER: 4 - restricted access
Any metallic object will never be labeled as - CORRECT ANSWER: MRI Safe
B1 is - CORRECT ANSWER: RF Power
Big Gradients allow smaller.. - CORRECT ANSWER: FOV, Shorter echo times, thinner
slices
Biologic effects of Static magnetic field: - CORRECT ANSWER: Vertigo, Metallic taste,
Magnetophosphenes, Magnetohydromagnetic effect, EKG perturbances, nystagmus
