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).
Ensuring that appropriate measures for minimizing risks to health that arise from the use of or exposure
to the MR equipment, as per the direction of the MRMD/MRRD, are implemented and monitored.
Managing hazards posed by the MR equipment, and monitoring the measures taken to protect against
such hazards.
Ensuring that all Heads of Departments and senior medical staff members who are responsible for
personnel who will be involved with the MR system are informed of the formal procedures for training
and authorization.
Magnetophosphenes
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.
,SCORE MORE
Bo
Static magnetic field direction
dBo/Dx
Gradient magnetic field - Change in Magnetic Field / change in distance
American Board of Magnetic Resonance Safety ABMRS provides MR Safety Credentialing for:
MR Medical Director (MRMD)
MR Safety Officers (MRSO)
MR Safety Experts (MRSE)
The MRMD certification is designed for:
physicians, such as radiologists, who have responsibility for the safe administration of MR exams.
The MRSO certification is designed for:
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:
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.
, SCORE MORE
The following types of injury can and have occurred during the MRI scanning process: (8)
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
Burns
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