| 摘要 |
A transmitter (30) and a gradient field control (20) apply radio frequency excitation and refocusing pulses and magnetic field gradients across an image region to induce pairs of phase encoded magnetic resonance signals. One of the magnetic resonance signals is phase encoded with a preselected reference phase encoding. The other is phase encoded with one of a plurality of image phase encodings. A receiver (34) receives the magnetic resonance signals which are digitized by an analog-to-digital converter (36) to produce a digital monitor view for storage in a monitor view memory or latch (56) and an image view for storage in an image view memory or latch (90). Views encoded with the reference phase encoding are either collected before the imaging sequence or derived from a plurality of collected monitor views to provide a reference view for storage in a reference view memory (54). As each pair of monitor and image views are received, the deviation between the monitor view and the reference view is determined (58). Based on the deviation, the image view is accepted or rejected. If the image view is rejected, a new paired monitor and image view may be generated and the process repeated. Alternately, adjacent views may be interpolated to provide a substitute view. The image views are Fourier transformed (96) into an image memory (98) from which an image may be displayed on a video monitor (100).
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