| 摘要 |
PROBLEM TO BE SOLVED: To suppress the reduction of MR signal and the reduction of S/N in polarization movement caused by magnetostatic field shiftΔBo caused by the impression of gradient magnetic field for localization. SOLUTION: This magnetic resonance diagnostic device executes a pulse sequence that three<1> H pulse are successively impressed and two other nuclear type pulses are successively impressed after the localization is performed by impressing a high-frequency magnetic field and a gradient magnetic field as prepulses. Thus, the polarization movement from<1> H to other nuclear type is generated, the MR signal is observed from the other nuclear type spin and the other nuclear type spectrum is found based on the MR signal. Then, the 3rd<1> H pulse is impressed in the phase orthogonal to the spin of<1> H J-coupled with the other nuclear type just before the 3rd<1> H pulse among three<1> H pulses is impressed.
|
