MAGNETORESONANT TOMOGRAPH DEVICE Russian patent published in 1995 - IPC

FIELD: introscopy engineering based on nuclear magnetic resonance; medicine; biology physical and chemical research. SUBSTANCE: magnetoresonant tomograph device with pulse magnetic field has solenoid-type electromagnet 1 carrying main winding 2 and compensating winding 3; placed inside electromagnet are shimming (correcting) windings 4 and gradient windings 5; device also has capacitor bank 6 connected to charge current source 7 and discharged through main winding 2 of electromagnet 1 by means of discharger 8, nuclear magnetic resonance sensor 9 of magnetic field with tracking circuit 10, signal amplifying and passing circuit 11, shunt 12, compensating current source 13, frequency synthesizer 14, transmitter 15, high-frequency commutator 17, connecting high-frequency circuit 18 to transmitter 15 and to high-frequency amplifier (receiver) 16, two analog-to-digital converters 19 encoding nuclear magnetic resonance signal, three low-frequency gradient amplifiers 20 connected to gradient coils 5, control subsystem 21 generating main time sequences of processes in tomograph and coupled with computer 22 affording control, data storage, their processing, and display. EFFECT: average energy requirement reduced by orders of magnitude, facilitated servicing of device due to absence of superconducting systems, high speed and quality of tomograms obtained due to high strength of magnetic field. 2 cl, 2 dwg