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Ultrafast interleaved gradient-echo-planar imaging on a standard scanner

✍ Scribed by G. C. McKinnon

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
804 KB
Volume
30
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

Ultra‐fast imaging traditionally implies either echo‐planar imaging on specially developed gradient systems, or very short repetition time gradient‐echo imaging on standard magnetic resonance imaging scanners. An alternative strategy for very fast imaging with conventional whole‐body scanners is discussed here. The technique is a hybrid, whereby the advantages of gradient‐echo imaging and echo‐planar imaging are combined. It is here denoted interleaved gradient‐echo‐planar imaging. It is not a single specific measurement sequence, but rather a continuum of sequences whereby multiple excitations with multiple gradient‐echos are employed. The power of this fast imaging approach is that one has much more flexibility toward the optimization of the measurement sequence with respect to imaging time, T~2~ relaxation, gradient power, resolution, image distortion, and signal‐to‐noise ratio. In vlvo human heart images, acquired in 110 ms, and with a resolution of 2.5 mm, have been obtained with a standard whole‐body scanner.

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