NMR IMAGING DEVICE

PURPOSE:To project an optional tomographic image accurately by calculating a necessary tomographic plane direction and the distance from the center of an inclined magnetic field to the tomographic plane from three-dimensional information which specifies the tomographic plane, and controlling an inclined magnetic field producing device and the distance from the center of the inclined magnetic field to the tomographic plane. CONSTITUTION:An electromagnet 2 driven by a power source 1 for a static magnetic field produces the static magnetic field, and a compuer 14 drives a power source 11 for inclined magnetic field control through D/A converters 8-10 for X-axial, Y- axial, and Z-axial inclined magnetic field control to establish an inclined magnetic field by an inclined magnetic field coil 7. Further, the computer 14 controls a transmitter receiver 5 to place the sliding position of an object 4 in a high-frequency magnetic field by a transmitting and receiving coil 3. The signal of an induced nuclear spin is received by the coil 3 and inputted to the computer 14 through the transmitter receiver 5 and an A/D converter 6. The computer 14 calculates the tomographic plane direction and the distance from th center of the inclined magnetic field to the tomographic plane which are required to obtain an optional tomographic plane image from three-dimensional information, and controls the power source 11 on the basis of the calculation result to project the optional tomographic image on a CRT12 accurately.