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MRSO - Implants and Devices - Module 5 questions and answers rated A+ 2024/2025
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MRSO - Implants and Devices - Module 5 questions and answers rated A+ 2024/2025
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MRSO - Implants and Devices - Module 5MR screening should be - ANS-verbal and interactive
-performed by Level 2 MR Personnel
MR screening should not be - ANSsimplified
Who defines terms for marking medical devices in MR environment? - ANSASTM
According to ASTM, MR Safe is applied to items that: - ANSItems that pose no known hazard in
ANY MR environment
Ex: wood, glass, plastic
According to ASTM, MR Unsafe is applied to items that: - ANSItem that poses unacceptable risk
in MR environment
According to ASTM, MR Conditional is applied to items that: - ANSItem that has demonstrated
safety within the MR environment within defined conditions
Categories of devices - ANSpassive
active: contain electrical components
Metallic implants are subjected to: - ANS-static magnetic field interactions
-heating (RF, gradients): length / loops
-induced currents (gradients)
-operational
-artifacts
Workflow for implants: - ANS-identify device
-determine FDA labeling
-If conditional, determine if conditions can be maintained
If item can't be identified or labeling can not be determined, risk vs benefit is determined by -
ANSradiologist
Procedures when determining implant assessment should be - ANSdocumented in writing
Conditions regarding safety and compatibility applies only to - ANSspecifically tested conditions
If safety or compatibility of a device is not documented in writing, one should - ANSnever
assume safety information
, Who is responsible for ensuring that published conditions of use are correct, up-to-date, and
available for MR personnel - ANSdevice manufacturer
Advisable to maintain a copy of conditions of use in: - ANSpatient's medical record
Resources for positively identifying implant or device - ANS-patient's medical record
-implant card
-reliable family member/caregiver
FDA is not responsible for - ANStesting
Who is responsible for testing and keeping up-to-date information regarding FDA labeling and
conditions of use? - ANSthe device manufacturer
All information regarding implants should be - ANSclearly documented in writing (not verbal from
family)
The MR Technologist does NOT determine MRI safety of a patient - ANSThe supervising MR
Radiologist is solely responsible
Who is liable for actions of MR Technologist regarding patient safety if they directed the actions
of the technologist? - ANSradiologist
Captain of the Ship Doctrine Purpose/Intent - ANSprotect a hospital from being sued
Conditions of use can include - ANS-static field
-RF field
-SAR
-B1rms
-duration of single series or entire scan
-type of coil
-spatial field gradient
-slew rates
-landmarking
-pt height
-location of device
-patient monitoring
International standards for testing were developed by - ANSASTM task group
How many standards determined by the ASTM address principle issues that can produce safety
concerns for implants and other devices in the MRI environment? - ANS5
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