Application of Tikhonov regularization to super-resolution reconstruction of brain MRI images

被引:0
作者
Zhang, Xin [1 ]
Lam, Edmund Y. [1 ]
Wu, Ed X. [1 ]
Wong, Kenneth K. Y. [1 ]
机构
[1] Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China
来源
MEDICAL IMAGING AND INFORMATICS | 2008年 / 4987卷
关键词
super-resolution reconstruction; MRI; Tikhonov regularization;
D O I
暂无
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
This paper presents an image super-resolution method that enhances spatial resolution of MRI images in the slice-select direction. The algorithm employs Tikhonov regularization, using a standard model of imaging process and reformulating the reconstruction as a regularized minimization task. Our experimental result shows improvements in both signal-to-noise ratio and visual quality.
引用
收藏
页码:51 / 56
页数:6
相关论文
共 11 条
[1]   Digital image restoration [J].
Banham, MR ;
Katsaggelos, AK .
IEEE SIGNAL PROCESSING MAGAZINE, 1997, 14 (02) :24-41
[2]  
EYAL C, 2006, MAGN RESON IMAGING, V24, P133
[3]   MRI inter-slice reconstruction using super-resolution [J].
Greenspan, H ;
Oz, G ;
Kiryati, N ;
Peled, S .
MAGNETIC RESONANCE IMAGING, 2002, 20 (05) :437-446
[4]  
HSU JT, 2004, P ICTG 2004, P524
[5]  
Irani M., 1993, Journal of Visual Communication and Image Representation, V4, P324, DOI 10.1006/jvci.1993.1030
[6]  
KATSAGGELOS AK, 2003, DIGITAL IMAGE RESTOR, V23
[7]   Noise in superresolution reconstruction [J].
Lam, EY .
OPTICS LETTERS, 2003, 28 (22) :2234-2236
[8]   The use of super-resolution techniques to reduce slice thickness in functional MRI [J].
Peeters, RR ;
Kornprobst, P ;
Nikolova, M ;
Sunaert, S ;
Vieville, T ;
Malandain, G ;
Deriche, R ;
Faugeras, O ;
Ng, M ;
Van Hecke, P .
INTERNATIONAL JOURNAL OF IMAGING SYSTEMS AND TECHNOLOGY, 2004, 14 (03) :131-138
[9]  
Peled S, 2001, MAGN RESON MED, V45, P29, DOI 10.1002/1522-2594(200101)45:1<29::AID-MRM1005>3.0.CO
[10]  
2-Z