Development of an alarmer using beep-pager in the detection of the failure of superconductive magnetic resonance′s refrigerator / 中华放射学杂志

Objective To develope an alarmer using beep-pager to detect and dispose the failure of superconductive magnetic resonance′s liquid helium refrigerator. Methods The alarmer was assembled with common integrate circuit and a telephone set to detect the system′s state according to the characteristic voice of condensation head. Results When the refrigerator failured, the alarmer could automatically dial the beep-pager′s number immediately every 5 minutes until the staff came to dispose the failure. Conclusion The alarmer was cheap and simple, it would be very useful for the hospital equipped with the superconductive magnetic resonance scanner.