| 摘要 |
An MR imaging method using NMR phenomenon and including the following steps: emitting an excitation RF pulse and a plurality of refocus RF pulses to an object to generate a plurality of spin echo signals successively; applying slice selecting gradient field pulses simultaneously with the RF pulses, respectively, for selecting slice planes; switching polarity of reading gradient field pulses a plurality of times during each of periods between the plurality of refocus RF pulses to generate a plurality of gradient echo signals distributed across one of the spin echo signals; applying, during each of the periods between the refocus RF pulses, a phase-encoding gradient field pulse providing a different integrated phase encode amount, to each of a plurality of echo signals (hereinafter called the same group of echo signals) generated upon lapse of the same time period from a point of time at which each of the spin echo signals is generated; applying the reading gradient field pulses in timed relationship with generation of the spin echo signals; repeating a pulse sequence consisting of the above steps while varying the integrated phase encode amount; and processing data acquired from the same group of echo signals to arrange the data in one of different k spaces according to the integrated phase encode amount applied to each of the echo signals, and to reconstruct a plurality of slice images based on the k spaces, respectively. <IMAGE> |
