Estimation of the noise in magnitude MR images

被引：195

作者：

Sijbers, J ^{[1
]}

den Dekker, AJ ^{[1
]}

Van Audekerke, J ^{[1
]}

Verhoye, M ^{[1
]}

Van Dyck, D ^{[1
]}

机构：

[1] Univ Antwerp, Dept Phys, B-2020 Antwerp, Belgium

来源：

MAGNETIC RESONANCE IMAGING | 1998年 / 16卷 / 01期

关键词：

noise estimation; double acquisition; Rice distribution;

D O I：

10.1016/S0730-725X(97)00199-9

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Magnitude magnetic resonance data are Rician distributed. In this note a new method is proposed to estimate the image noise variance for this type of data distribution, The method is based on a double image acquisition, thereby exploiting the knowledge of the Rice distribution moments. (C) 1998 Elsevier Science Inc.

引用

收藏

页码：87 / 90

页数：4

相关论文

共 13 条

[1] Digital image restoration [J].

Banham, MR ;

Katsaggelos, AK .

IEEE SIGNAL PROCESSING MAGAZINE, 1997, 14 (02) :24-41

[2]

Garnier S. J., 1995, Journal of Mathematical Imaging and Vision, V5, P7, DOI 10.1007/BF01250250

[3] NONLINEAR ANISOTROPIC FILTERING OF MRI DATA [J].

GERIG, G ;

KUBLER, O ;

KIKINIS, R ;

JOLESZ, FA .

IEEE TRANSACTIONS ON MEDICAL IMAGING, 1992, 11 (02) :221-232

[4] THE RICIAN DISTRIBUTION OF NOISY MRI DATA [J].

GUDBJARTSSON, H ;

PATZ, S .

MAGNETIC RESONANCE IN MEDICINE, 1995, 34 (06) :910-914

[5] MEASUREMENT OF SIGNAL INTENSITIES IN THE PRESENCE OF NOISE IN MR IMAGES [J].

HENKELMAN, RM .

MEDICAL PHYSICS, 1985, 12 (02) :232-233

[6] MEASURING SIGNAL-TO-NOISE RATIOS IN MR IMAGING [J].

KAUFMAN, L ;

KRAMER, DM ;

CROOKS, LE ;

ORTENDAHL, DA .

RADIOLOGY, 1989, 173 (01) :265-267

[7] AN UNBIASED SIGNAL-TO-NOISE RATIO MEASURE FOR MAGNETIC-RESONANCE IMAGES [J].

MCGIBNEY, G ;

SMITH, MR .

MEDICAL PHYSICS, 1993, 20 (04) :1077-1078

[8] THE USE OF POWER IMAGES TO PERFORM QUANTITATIVE-ANALYSIS ON LOW SNR MR-IMAGES [J].

MILLER, AJ ;

JOSEPH, PM .

MAGNETIC RESONANCE IMAGING, 1993, 11 (07) :1051-1056

[9] SIGNAL-TO-NOISE MEASURES FOR MAGNETIC-RESONANCE IMAGERS [J].

MURPHY, BW ;

CARSON, PL ;

ELLIS, JH ;

ZHANG, YT ;

HYDE, RJ ;

CHENEVERT, TL .

MAGNETIC RESONANCE IMAGING, 1993, 11 (03) :425-428

[10]

Papoulis A., 1984, Probability, Random Variables and Stochastic Processes, V2nd