METHOD OF COMPENSATION OF EXTERNAL MAGNETIC FIELDS OF DISTURBANCES WITH FORMATION OF MAGNETORESONANCE IMAGE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 1997 - IPC

FIELD: measurement of variable magnetic values. SUBSTANCE: in compliance with proposed method of compensation of external magnetic fields of disturbance with formation of magnetoresonance image value of induction of external magnetic field of disturbances measured outside of region of action of working magnetic field of magnetoresonance image system is converted to electric signal, is amplified and transmitted to both region of action of working magnetic field and to point of measurement of induction of magnetic field of disturbance where specified electric signal is converted to magnetic field compensating for influence of external magnetic field of disturbance. Device for implementation of proposed method includes magnetometer 1 with ferroprobe 2, amplifier 3, compensation coils 4, 5, source 6 of current of compensation of leakage field, four converters 7 of current value, current adder 8 and unit of moment-free coils 9 intercoupled functionally. EFFECT: improved functional stability. 4 cl, 1 dwg