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ARMRIT - Practice test (part 3. MRI Safety) Questions and Answers Fully Solved
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ARMRIT - Practice test (part 3. MRI Safety)
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ARMRIT - Practice test (part 3. MRISafety)
The factor which determines the calculated SAR average is: - answerThe Patient weight
in kilograms
The maximum exposure to the head and trunk from the main magnetic field (Bo) is: -
answer3T
The force that can cause a ferromagnetic object such as an oxygen tank to become a
projectile in the fringe field is: - answerTranslational attraction
Maximum exposure to Radio-frequency (RF) averaged over the head is: - answerNo
more than 3.2 w/kg
Currently, pregnant patients and personnel are excluded from exposure to MRI for the: -
answer1st trimester
Magnetically sensitive objects such as credit cards, magnetic tapes, and discs, and
EKG equipment should be kept beyond the ______ gauss line. - answer5 gauss line
SAR stands for: - answerSpecific Absorption Rate
Hazards associated with large ferromagnetic objects, such as oxygen tanks are
contraindicated in MR magnets with field strength of: - answerAny Strength
An explosive boiling off of liquid helium and/or liquid nitrogen and a sudden loss of
superconductivity is known as a: - answerQuench
Once a patient has been screened, positioned, and the Mri study is underway, the Mri
technologist should: - answerVisualize/observe and communicate with the patient
through the intercom
Which form of electromagnetic field in MRI can cause cardiac fibrillation? - answerGMF
Of the following categories of patients, which one would not present any special safety
considerations? - answerPatients with previous arthroscopic knee surgery
The maximum exposure to the extremities from the main magnetic field (Bo) is: -
answer5T
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