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 ra...
MRSO Exam Prep Questions Solved 100%
Correct
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
The most common objects to undergo significant heating - Answer Wires and leads.
Objects associated with burns are: - Answer pulse oximeter sensors and cables,
cardiorespiratory monitor cables, safety pins, metal clamps, drug delivery patches
(which may contain metallic foil), and tattoos (which may contain iron oxide pigment).
The American College of Radiology recommends that ________ and ____________
should be considered a relative contraindication for MRI - Answer implanted cardiac
pacemakers
implantable cardioverter/defibrillators
Joint Commission checks that procedures are in place for the following safety hazards: -
Answer Claustrophobic / Anxious patients
Emergent patient needs
Patients with implanted devices, embedded metal objects
Prevention entry of ferromagnetic metal objects into the MRI environment
Protecting patients from acoustic noise
How many MRI Safety Zones? - Answer 4
Classifications of Personnel: - Answer MR Personnel
Level 1
Level 2
MR Medical Director
MR Safety Officer
, Non-MR Personnel
In which zone should patients change out of their street clothes? - Answer Zone 2
What takes place in Zone 2? - Answer Screening, changing, ferromagnetic
detection.What is
What takes placre in Zone 4? - Answer The Scanning.
Personnel Designation
Level 1: - Answer Those who have passed minimal safety
educational efforts to ensure their own safety
as they work within Zone III
Level 1 MR personnel are not permitted to - Answer directly admit, or be designated
responsible
for, non-MR personnel in Zone IV.
Level 2 MR Personnel - Answer Those who have been more extensively trained and
educated in the broader aspects of MR safety issues, including, for example, issues
related to the potential for thermal loading or burns and direct neuromuscular
excitation from rapidly changing gradients
It is the responsibility of the _________not only to identify the necessary training, but
also to identify those individuals
who qualify as level 2 MR personnel - Answer MR medical director
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