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Improved spatial harmonic selection for SMASH image reconstructions

✍ Scribed by Charles A. McKenzie; Ernest N. Yeh; Daniel K. Sodickson

Book ID
102531192
Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
179 KB
Volume
46
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

The fitting of coil sensitivity functions to spatial harmonics is central to image reconstructions using the simultaneous acquisition of spatial harmonics (SMASH) technique. It has previously been shown that the selection of the set of spatial harmonics used in a SMASH reconstruction can have a noticeable effect on the quality of the reconstructed image. However, a mechanism for automatic selection of the best set of harmonics in any particular situation has not been provided. In this work, a modification to the SMASH reconstruction procedure is introduced that allows the use of a weighted average of all possible harmonics in a reconstruction. The new reconstruction procedure is shown to allow automatic selection of the spatial harmonics and substantially improve SNR for both phantom and in vivo images. Magn Reson Med 46:831–836, 2001. Β© 2001 Wiley‐Liss, Inc.

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