Traditional medical monitors use metal parts and electronics that would interfere with the electromagnetic pulses generated by the MRI machine while it’s in use. Metal parts can also cause burning or other unpleasant or dangerous side effects when exposed to the MRI radiation. Optical monitoring will not interfere with the operation of the machine in any way nor will it cause any harm to the patient. In addition, any monitoring system must be portable and able to move with the patient as they move from the anesthesiologist to the machine table to the post-testing area where the patient remains until they wake up after their scan.
In addition, a finger tip sensor uses near infrared scattering to determine the blood oxygen levels of the patient. Like the bandage monitor, this sensor includes no metal or electrical parts that could interfere with the test or cause harm to the patient.