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A multi-scale method for automatic correction of intensity non-uniformity in MR images

✍ Scribed by Chao Han; Thomas S. Hatsukami; Chun Yuan

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
310 KB
Volume
13
Category
Article
ISSN
1053-1807

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✦ Synopsis

Abstract

In this paper, a novel multi‐scale method for coil sensitivity profile correction is presented based on wavelet transform. A magnetic resonance (MR) image can be decomposed into two spaces by the wavelet transform: approximate space and residual space. The approximate templates in approximate space can be thought of as multi‐scale sensitivity profiles of the surface coil for coil correction. When we choose a suitable filter for decomposition, one of the sensitivity profiles should be optimal among the multi‐scale sensitivity profiles. The optimal sensitivity profile can be chosen automatically by an analysis of the contents of the two spaces. The multi‐scale method does not rely on any data other than the image generated by the MR scanner. The experiment showed promising results based on one‐dimensional simulation and images of phantom and human images. J. Magn. Reson. Imaging 2001;13:428–436. © 2001 Wiley‐Liss, Inc.

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