The Magnetic Resonance Environment and Safety Considerations

The MR environment for high-field-strength MR scanners is potentially hostile for ED personnel and their patients. Standard support devices necessary for patient monitoring, such as pulse and blood oxygenation monitoring, blood pressure measurement, and electrocardiogram evaluation, are incompatible with operation inside the MR suites. Cardiac disease patients are typically transported with oxygen cylinders: steel oxygen cylinders will act as high-speed projectiles inside the MR suite if allowed near the MR scanner. Finally, electromechanical infusion pumps for delivery of medication are not certified to operate properly near strong magnetic fields. Because of these considerations, the preparation of patients for MR imaging involves the teamwork of both the ED staff and the MR technologists who can advise on device compatibility and provide MR compatible equipment (Ta.ble.57").

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