| 摘要 |
PURPOSE:To decide easily information of size, etc. of an obtained sectional image by displaying a mark which is varied in accordance with the grade intensity of a grade magnetic field, together with an NMR image on a display means. CONSTITUTION:A high-frequency pulse is frequently irradiated to an object 2 through a coil 10 from a transmitter 11, controlling a current supplied to coils 4, 6 and 8 from power sources 3, 5 and 7, through an electronic computer 9. A generated free induction attenuating (FID) signal is sent to the electronic computer 9 through a receiver 12, a detector 13 and an A/D converter 14. The electronic computer 9 executes a prescribed processing containing Fourier transform to the FID signal, and displays an obtained NMR image, and a mark which is varied in accordance with the grade intensity of a grade magnetic field from a mark signal generator 16, on a cathode-ray tube 15. Accordingly, size of the displayed NMR image is decided easily. |
