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View-ordering in radial fast spin-echo imaging

✍ Scribed by Rebecca J. Theilmann; Arthur F. Gmitro; Maria I. Altbach; Theodore P. Trouard

Publisher: John Wiley and Sons
Year: 2004
Tongue: English
Weight: 519 KB
Volume: 51
Category: Article
ISSN: 0740-3194
DOI: 10.1002/mrm.20031

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✦ Synopsis

Abstract

Radial MRI sequences are frequently used to obtain images with reduced sensitivity to motion. To decrease imaging time, multiple spin‐echo acquisitions can be incorporated into radial sequences. In this case, different radial lines of Fourier data have different TE times and the resulting images can contain streaking artifacts due to T~2~ decay. The streaking is not only dependent on the T~2~ of the object and the timing of the data acquisition, but also on the order in which radial lines are collected (view order). The view ordering can easily be controlled to minimize artifacts due to T~2~ decay as well as motion. Four view‐ordering techniques are presented and evaluated for the radial FSE sequence. Magn Reson Med 51:768–774, 2004. © 2004 Wiley‐Liss, Inc.

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