SPIN EXCITATION METHOD, MAGNETIC RESONANCE PHOTOGRAPHING METHOD AND MAGNETIC RESONANCE PHOTOGRAPHING DEVICE

摘要

PURPOSE: To properly perform a first recovery in magnetic resonance photographing using a first spin echo method with inversion recovery. CONSTITUTION: Spin is excited by 180°x pulse, and after the lapse of TI time, the spin is excited by 90°x pulse. After that, in the lapse of esp/2 hours, the spin is excited by 180°y pulse, and after the lapse of esp time, the spin is excited one by one by odd-numbered 180°y pulse. After the lapse of esp/2 hours, the spin is excited by 90°x pulse.