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MRSO - IMPLANTS AND DEVICES - MODULE 5
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MRSO - IMPLANTS AND DEVICES - MODULE 5MR screening should be verbal and interactive, administered by Level 2 personnel.
MR screening shouldn't be simplified.
Who defines the terms for designating medical devices in an MR environment? -
Answer ASTM
ASTM defines MR Safe as objects that offer no known hazards in any MR
environment.
Example: wood, glass, plastic.
According to ASTM, MR Unsafe refers to objects that represent an unacceptable
danger in an MR environment.
According to ASTM, MR Conditional is applied to objects that have proved safe in
the MR environment under prescribed parameters.
Categories of devices - Answer passively.
Active: contains electrical components.
Metallic implants are exposed to: - Static magnetic field interactions.
-heating (RF, gradients): length and loops
induced currents (gradients)
, -operational
-artefacts
Workflow for implants: - ANSWER -Identify the device
- Determine FDA labeling.
-If conditional, see if the conditions can be maintained.
If the item cannot be identified or the labeling cannot be determined, the risk vs
benefit is determined by the radiologist.
Procedures for determining implant assessments should be documented in writing.
Conditions for safety and compatibility apply only to - ANSWER specially tested
conditions.
If a device's safety or compatibility is not stated in writing, one should not presume
safety information.
Who is responsible for ensuring that stated conditions of use are correct, up-to-date,
and available for MR personnel? - device maker.
It is advisable to have a copy of the conditions of use in: - Answer the patient's
medical record.
Resources for accurately identifying an implant or device - ANSWER: patient's
medical record.
-Implant card
-reliable family member or caretaker
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