Removing signal intensity inhomogeneity from surface coil MRI using discrete wavelet transform and wavelet packet

被引：0
|
作者：
Lin, FH [1 ]
Chen, YJ [1 ]
Belliveau, JW [1 ]
Wald, LL [1 ]
机构：
[1] MIT, Harvard Mit Div Hlth Sci & Technol, Cambridge, MA 02139 USA
来源：
PROCEEDINGS OF THE 23RD ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-4: BUILDING NEW BRIDGES AT THE FRONTIERS OF ENGINEERING AND MEDICINE | 2001年 / 23卷
关键词：
MRI; wavelet packet; discrete wavelet transform; surface coil;
D O I：
暂无
中图分类号：
R5 [内科学];
学科分类号：
1002 ; 100201 ;
摘要：
We evaluate a combined discrete wavelet transform (DWT) and wavelet packet algorithm to improve the homogeneity of magnetic resonance imaging when a surface coil is used for reception. The proposed algorithm estimates the spatial sensitivity profile of the surface coil from the original anatomical image and uses this information to normalize the image intensity variations. Estimation of the coil sensitivity profile based on the wavelet transform of the original image data is found to provide a robust method for removing the slowly varying spatial sensitivity pattern.
引用
收藏
页码：2793 / 2796
页数：4
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