Wavelet-based Rician noise removal for magnetic resonance imaging

被引：420

作者：

Nowak, RD ^{[1
]}

机构：

[1] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77251 USA

来源：

IEEE TRANSACTIONS ON IMAGE PROCESSING | 1999年 / 8卷 / 10期

基金：

美国国家科学基金会;

关键词：

denoising; filtering; magnetic resonance imaging; wavelets;

D O I：

10.1109/83.791966

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

It is well known that magnetic resonance magnitude image data obey a Rician distribution. Unlike additive Gaussian noise, Rician "noise" is signal-dependent, and separating signal from noise is a difficult task. Rician noise is especially problematic in low signal-to noise ratio (SNR) regimes where it not only causes random fluctuations, but also introduces a signal-dependent bias to the data that reduces image contrast. This paper studies wavelet-domain filtering methods for Rician noise removal. We present a novel wavelet-domain filter that adapts to variations in both the signal and the noise.

引用

页码：1408 / 1419

页数：12

共 31 条

[1]

[Anonymous], 1993, Ten Lectures of Wavelets

[2]

BERKNER K, 1999, 9801 CML TR RIC U

[3]

Berstein MA, 1989, MED PHYS, V16, P813

[4]

Coifman R. R., 1995, LECT NOTES STAT, V103, P125, DOI [10.1002/cpa.3160410705, DOI 10.1002/CPA.3160410705, DOI 10.1007/978-1-4612-2544-7_9]

[5] WHY MEM DOES NOT WORK IN MR IMAGE-RECONSTRUCTION [J].

CONSTABLE, RT ;

HENKELMAN, RM .

MAGNETIC RESONANCE IN MEDICINE, 1990, 14 (01) :12-25

[6]

Donoho D. L., 1993, Applied and Computational Harmonic Analysis, V1, P100, DOI 10.1006/acha.1993.1008

[7] IDEAL SPATIAL ADAPTATION BY WAVELET SHRINKAGE [J].

DONOHO, DL ;

JOHNSTONE, IM .

BIOMETRIKA, 1994, 81 (03) :425-455

[8] A SIGNAL-TO-NOISE CALIBRATION PROCEDURE FOR NMR IMAGING-SYSTEMS [J].

EDELSTEIN, WA ;

BOTTOMLEY, PA ;

PFEIFER, LM .

MEDICAL PHYSICS, 1984, 11 (02) :180-185

[9] THE INTRINSIC SIGNAL-TO-NOISE RATIO IN NMR IMAGING [J].

EDELSTEIN, WA ;

GLOVER, GH ;

HARDY, CJ ;

REDINGTON, RW .

MAGNETIC RESONANCE IN MEDICINE, 1986, 3 (04) :604-618

[10]

FIGUEIREDO M, 1998, P 32 AS C SIGN SYST

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