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An alternative to GRASE: toward spin-echo-like contrast with independent reconstruction of gradient-echo images.

作者信息

Keller P J, Karis J P, Fram E K, Heiserman J E, Drayer B P

机构信息

Department of MRI Research, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, AZ 85013-4496, USA.

出版信息

Magn Reson Med. 1996 Nov;36(5):804-8. doi: 10.1002/mrm.1910360523.

DOI:10.1002/mrm.1910360523
PMID:8916034
Abstract

Multiple gradient echoes are generated for each RF echo of a Carr-Purcell-Meiboom-Gill (CPMG) train. Independently, phase-encoded fast spin-echo images are obtained from the different gradient echoes. Presently, three images are formed from three gradient-echoes from each of four RF echoes. The two peripheral gradient echo images are encoded for a late effective TE, then summed after reconstruction: this image has decreased fat intensity and increased susceptibility contrast compared with fast spin echo. The central gradient echoes yielded another image of intermediate contrast useful for neuroimaging. Raw data from the variously timed gradient echoes are not combined as they are in GRASE.

摘要

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引用本文的文献

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Gradient- and spin-echo (GRASE) MR imaging: a long-existing technology that may find wide applications in modern era.梯度与自旋回波（GRASE）磁共振成像：一项长期存在的技术，可能在现代得到广泛应用。
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