MRSO UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS COMPREHENSIVE
STUDY GUIDE
●● Magnetophosphenes
Answer: A Sensory Symptom where the subject sees flashing lights
caused by an induced electrical current in the retina when exposed to a
strong magnetic field.
●● Bo
Answer: Static magnetic field direction
●● dBo/Dx
Answer: Gradient magnetic field - Change in Magnetic Field / change in
distance
●● American Board of Magnetic Resonance Safety ABMRS provides
MR Safety Credentialing for:
Answer: MR Medical Director (MRMD)
MR Safety Officers (MRSO)
MR Safety Experts (MRSE)
●● The MRMD certification is designed for:
,Answer: physicians, such as radiologists, who have responsibility for the
safe administration of MR exams.
●● The MRSO certification is designed for:
Answer: those with a supervisory MRI safety role at the point of care.
While not exclusive to technologists, this role is most frequently be
filled by an MR technologist.
●● The MRSE certification is designed for:
Answer: those in an expert, technical consulting role who may help
determine the safety of complex conditions. While not exclusive to MR
medical physicists, this role is most frequently filled by a
medical physicist.
●● The following types of injury can and have occurred during the MRI
scanning process: (8)
Answer: 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.
●● The most common patient injuries in the MRI suite
Answer: Burns
CORRECT ANSWERS COMPREHENSIVE
STUDY GUIDE
●● Magnetophosphenes
Answer: A Sensory Symptom where the subject sees flashing lights
caused by an induced electrical current in the retina when exposed to a
strong magnetic field.
●● Bo
Answer: Static magnetic field direction
●● dBo/Dx
Answer: Gradient magnetic field - Change in Magnetic Field / change in
distance
●● American Board of Magnetic Resonance Safety ABMRS provides
MR Safety Credentialing for:
Answer: MR Medical Director (MRMD)
MR Safety Officers (MRSO)
MR Safety Experts (MRSE)
●● The MRMD certification is designed for:
,Answer: physicians, such as radiologists, who have responsibility for the
safe administration of MR exams.
●● The MRSO certification is designed for:
Answer: those with a supervisory MRI safety role at the point of care.
While not exclusive to technologists, this role is most frequently be
filled by an MR technologist.
●● The MRSE certification is designed for:
Answer: those in an expert, technical consulting role who may help
determine the safety of complex conditions. While not exclusive to MR
medical physicists, this role is most frequently filled by a
medical physicist.
●● The following types of injury can and have occurred during the MRI
scanning process: (8)
Answer: 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.
●● The most common patient injuries in the MRI suite
Answer: Burns
