| 摘要 |
<p>A fast magnetic resonance whole body imaging method and apparatus. In each of one or more repetition intervals, after an initial NMR RF (90°) nutation pulse a sequence of (180°) RF nutation pulses is used to refocus the RF response into a corresponding train of spin echoes (S2, S5, S8). During the time that the spin echoes would normally occur after each (180°) RF pulse, an alternating polarity read-out gradient is applied so as to form a sub-sequence of gradient echoes (S1, S3, S4, S6, S7, S9). Non-contiguous K-space trajectories of the acquired data are interleaved.</p> |
