Quick re-connect diversity radio system for communicating patient data out of a shielded MR room

摘要

An RF shielded room (14) which houses a magnetic resonance scanner (12) also houses a patient monitor (20) which includes a plurality of sensors (18) which collect physiological data about a patient undergoing a magnetic resonance examination. The monitor includes a transmitter (46) which transmits the physiological data on at least two frequency channels of a broadband frequency spectrum. A communication unit (26) located outside the RF shielded room includes first and second receivers (54, 58) which receive the physiological data from the monitor on the first and second frequency channels, respectively. A processor (62) combines physiological data received by the first and second receivers to. A display (32) displays the combined physiological data. A switch (56) switches antenna connections of the receivers (54, 58) responsive to detection of multipath fade.

主权项

1. A system for communicating physiological data, the system comprising:
a plurality of remote medical devices configured to sense physiological data about an associated patient disposed in a radio frequency (RF) shielded room RF shielded by an RF shield; a patient monitor configured to collect the physiological data from the remote medical devices and located within the RF shielded room, the patient monitor including:
at least one transmitter which defines a wideband frequency spectrum divided by frequency into at least two frequency channels and which alternately transmits the physiological data alternately on the at least two frequency channels of a broadband frequency spectrum;a first communication unit located outside the RF shielded room, the first communication unit including:
a first receiver configured to receive physiological data from the patient monitor on a first of the frequency channels;a second receiver configured to receive physiological data from the patient monitor on a second of the frequency channels;a first processor communicating with the first and second receivers to process physiological data received by the first and second receivers to generate a received physiological data stream;first and second antennas extending from outside the RF shielded room through the RF shield to be disposed at least partially inside the RF shielded room; anda switch configured to switch between a first configuration in which the first antenna feeds the first receiver and the second antenna feeds the second receiver and a second configuration in which the first antenna feeds the second receiver and the second antenna feeds the first receiver;wherein the first processor is further configured to operate the switch responsive to detection of a multipath destructive interference fade condition; anda display which displays the received physiological data stream.