METHOD OF INSPECTION OF CONDITION OF CRYOGENIC COOLING SYSTEM OF MAGNETIC-RESONANCE TOMOGRAPH'S SCREEN

摘要

FIELD: medical equipment. ^ SUBSTANCE: pressure of helium is monitored in cooling circuit. Audio signal of operation of cryogenic system is recorded inside cryostat area. Audio signal is dispersed to spectrum. Relative change of separate spectral components is estimated during some period of time due to comparison of their level with threshold values assigned for cryogenic system. Warning signals on necessity of checking of operation are formed on the base of the changes. Specific components of cryogenic system can be subject to replacement if necessary if levels of excited spectral components exceed specified thresholds. ^ EFFECT: improved reliability of magnetic-resonance tomography. ^ 6 dwg, 3 ex