MRSO EXAM PREP QUESTIONS WITH VERY
ELABORATED ANSWERS CORRECTRY WELL
ORGANIZED LATEST 2024 – 2025 ALREADY
GRADED A+
What are the 3 Static Magnetic Field Forces? - ANSWERS-Rotation
Translation
Lenz's forces
Rotational force is ________________ at isocenter - ANSWERS-greatest
Rotational / Torque force: - ANSWERS-Force exerted on an elongated
ferromagnetic object so it aligns with the
direction of the magnetic field
,The following types of injury can and have occurred during the MRI scanning
process: (8) - ANSWERS-1. "Missile effect" or "projectile" injury in which
ferromagnetic objects (those having magnetic properties) such as ink pens,
wheelchairs, and oxygen canisters are pulled into the MRI scanner at rapid
velocity.
2. Injury related to dislodged ferromagnetic implants such as aneurysm clips, pins
in joints, and drug infusion devices.
3. Burns from objects that may heat during the MRI process, such as wires
(including lead wires for both implants and
external devices) and surgical staples, or from the patient's body touching the
inside walls (the bore) of the MRI scanner
during the scan. (2)
4. Injury or complication related to equipment or device malfunction or failure
caused by the magnetic field. For example, battery-powered devices
(laryngoscopes, microinfusion pumps, monitors, etc.) can suddenly fail to operate;
some
programmable infusion pumps may perform erratically; (3) and pacemakers and
implantable defibrillators may not behave as programmed.
5. Injury or complication due to failure to attend to patient support systems
during the MRI. This is especially true for patient
sedation or anesthesia in MRI arenas. For example, oxygen canisters or infusion
pumps run out and staff must either leave
the MRI area to retrieve a replacement or move the patient to an area where a
replacement can be found.
6. Acoustic injury from the loud knocking noise that the MRI scanner makes.
7. Adverse events related to the administration of MRI contrast agents.
, 8. Adverse events related to cryogen handling, storage, or inadvertent release in
superconducting MR imaging system sites.
MR Safety Officer responsibilities - ANSWERS-The role of MRSO is often carried
out by the senior
Radiographer (in the USA this will generally be an MR technologist), but other
suitably trained individuals could also fill this role. Multiple MRSOs could be
appointed, provided only one is in charge at a given time. His/her responsibilities
include the following:
To be readily accessible and available (eg, to the operators of the MR system) at
all times that the MR facility is accessible.
Ensuring that proper policies and procedures for day-today MR safety are
enforced.
Developing, documenting, and introducing, in conjunction with and under the
authority of the MRMD/MRRD, safe working procedures for the MR environment.
Ensuring that adequate written safety procedures, work instructions, emergency
procedures, and operating instructions are issued to all concerned after full
consultation with the MRMD/MRRD (and, if/as needed, the MRSE).
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