A normalized thoracic coordinate system for atlas mapping in 3D CT images

被引：4

作者：

Wang, Hongkai ^{[1
]}

Bai, Jing ^{[1
]}

Zhang, Yonghong ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Biomed Engn, Beijing 100084, Peoples R China

来源：

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL | 2008年 / 18卷 / 01期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

atlas mapping; registration; segmentation; molecular imaging;

D O I：

10.1016/j.pnsc.2007.08.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, a normalized thoracic coordinate system (NTCS) is defined for rapidly mapping the 41) thoracic organ atlas into individual CT volume images. This coordinate system is defined based on the thoracic skeleton. The coordinate values are normalized by the size of the individual thorax so that this coordinate system is universal to different individuals. For compensating the respiratory motion of the organs, a 4D dynamic torso atlas is introduced. A method for mapping this dynamic atlas into the individual image using the NTCS is also proposed. With this method, the dynamic atlas was mapped into the clinical thoracic CT images and rough positions of the organs were found rapidly. This NTCS-based 41) atlas mapping method may provide a novel way for estimating the thoracic organ positions in low-resolution molecular imaging modalities, as well as in modern 41) medical images. (c) 2007 National Natural Science Foundation of China and Chinese Academy of Sciences. Published by Elsevier Limited and Science in China Press. All rights reserved.

引用

页码：111 / 117

页数：7

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