Development of wavelet de-noising technique for PET images

被引：36
|
作者：
Shih, YY
Chen, JC [1 ]
Liu, RS
机构：
[1] Natl Yang Ming Univ, Dept Med Radiat Technol, Taipei 112, Taiwan
[2] Natl Yang Ming Univ, Inst Radiol Sci, Taipei 112, Taiwan
[3] Natl Taiwan Univ, Inst Biomed Engn, Taipei 10764, Taiwan
[4] Natl Yang Ming Univ, Sch Med, Taipei 112, Taiwan
来源：
COMPUTERIZED MEDICAL IMAGING AND GRAPHICS | 2005年 / 29卷 / 04期
关键词：
positron emission tomography; wavelet transform; de-noising; image filtering; image quality;
D O I：
10.1016/j.compmedimag.2004.12.002
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
Positron emission tomography (PET) imaging provides the functional information and precise physiological uptake of radioactivity in a patient's body. But the shortcoming of PET is low signal to noise ratio (SNR) due to photon noise. The noise may influence image quality, and cause the mistake of clinical interpretation. The purpose of this research is to develop a wavelet de-noising technique to reduce the noise of PET images. By processing the image through the optimum wavelet parameters we selected, we keep the resolution and contrast but reduce almost half of coefficient of variation in the region of interest of PET images. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：297 / 304
页数：8
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