MR safety and compatibility are internationally recognized as important issues for medical devices.
Testing of devices is important as well as the MR labeling to provide important information for the MR user interface at the MR console for scanning of implant patients safely.
The reader shall be enabled to differentiate between different MR interactions existent for medical devices in the MR environment.
Understanding the technical complexity of MR test results...
MR scanning of electrically conductive implants is contraindicated without using device labels ''MR safe'' or ''MR conditional''. Devices that can be exposed to an MR environment must be tested for magnetically induced forces,
RF- and gradient induced interactions,
malfunction as well as MR image artifacts.
Standardized test methods are established.
Further standard development is work in progress e.g.
RF and gradient induced voltages,
heating as well...
Imaging findings OR Procedure details
Chapter 1: MR interactions
The following interactions of a medical device can be identified for the MR environment:
Magnetically induced displacement force (static,
Magnetically induced torque (static,
Radio frequency (RF) induced heating and
Gradient induced heating
RF and Gradient induced voltages (stimulation,
Gradient induced vibration
Malfunction of the device within the MR environment (dependent on individual demands)
Malfunction of the MR...
Standardized MR labeling of devices is compulsory for providing comprehensive and reliable information for the daily MR-clinical routine.
minimize patient risk
guide development of MR-suitable devices
support MR users.
the comprehesive MR safety education of the MR user is very important for interpreting MR labeling data correctly and individual enough for the specific case.
Gregor SCHAEFERS obtained his Dipl.-Ing.
(FH) degree in medical engineering from the University of Applied Sciences Fachhochschule Gelsenkirchen,
Germany in 2001.
He is founder,
shareholder and managing director of MR:comp GmbH (www.mrcomp.com),
a specialized testing institution for MR safety and compatibility testing of medical devices.
He is member of DIN,
ISO and IEC as well as ASTM standardization committees and working in the...
“Standard Test Method for Measurement of Magnetically Induced Displacement Force on Medical Devices in the Magnetic Resonance Environment”; 2006,
“Standard Test Method for Measurement of Magnetically Induced Torque on Passive Implants in the Magnetic Resonance Environment”; 2006,
“Standard Test Method for Measurement of Radio Frequency Induced Heating Near Passive Implants During Magnetic Resonance Imaging”;...