Respiratory motion correction with an improved demons algorithm for PET images

被引：1

作者：

Gao Juan ^{[1
,2
]}

Chai Pei ^{[1
]}

Yun Ming-Kai ^{[1
]}

Liu Shuang-Quan ^{[1
]}

Shan Bao-Ci ^{[1
]}

Wei Long ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Anal Tech, Beijing 100049, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

CHINESE PHYSICS C | 2012年 / 36卷 / 10期

基金：

中国国家自然科学基金;

关键词：

motion correction; demons algorithm; discontinuity; PET; REGISTRATION;

D O I：

10.1088/1674-1137/36/10/020

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Respiratory motion is a major factor that affects the quality of PET images of the thoracic area. The diaphragm moves about 15-20 mm due to respiratory motion, which substantially degrades the effective spatial resolution of PET. In this paper, a gated acquisition method is used to correct the motion effects. In this method, an improved demons algorithm is proposed to align the gated images. The experimental results show that the quality of PET images is significantly improved when using our improved method and the proposed method has a faster convergence rate than the original demons algorithm.

引用

页码：1025 / 1030

页数：6

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