›› 2011, Vol. 31 ›› Issue (2): 169-.doi: 10.3969/j.issn.1674-8115.2011.02.011

• 论著(基础研究) • 上一篇    下一篇

虚拟内窥镜心脏超声图像滤波和分割方法评价

薛海虹1, 陈滨津2, 孙 锟1,3, 余建国2   

  1. 1.上海交通大学 医学院附属新华医院儿科心脏中心, 上海 200092;2.复旦大学电子工程系, 上海 200433;3.上海交通大学 医学院附属上海儿童医学中心心内科, 上海 200127
  • 出版日期:2011-02-28 发布日期:2011-03-01
  • 通讯作者: 孙 锟, 电子信箱: drsunkun@yahoo.com.cn。
  • 作者简介:薛海虹(1967—), 女, 副主任医师, 博士;电子信箱: haihong.xue@yahoo.com.cn。
  • 基金资助:

    国家自然科学基金(30371497)

Methodological study on filtering and segmentation of three-dimensional echocardiographic images by virtual endoscopy

XUE Hai-hong1, CHEN Bin-jin2, SUN Kun1,3, YU Jian-guo2   

  1. 1.Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China;2.Department of Electronic Engineering, Fudan University, Shanghai 200433, China;3.Department of Pediatric Cardiology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
  • Online:2011-02-28 Published:2011-03-01
  • Supported by:

    National Natural Science Foundation of China, 30371497

摘要:

目的 对虚拟内窥镜心脏超声图像滤波和图像分割方法进行评价。方法 对30例小儿心脏三维超声数据进行滤波和图像分割,分别采用光线投射法、光线投射法(梯度阈值3~19)、光线投射法(梯度阈值3~6)及滤波并分类后的光线投射法(梯度阈值3~6),对显示结果进行比较。结果 显示效果较好者为滤波并采用聚类法分类后光线投射法,其显示的结果(如二尖瓣、三尖瓣以及房间隔缺损)十分清晰。结论 对虚拟内窥镜心脏超声图像预处理时,宜采用滤波、聚类法分类后光线投射法。

关键词: 虚拟内窥镜, 滤波, 分割, 三维超声心动图

Abstract:

Objective To assess filtering and segmentation of three-dimensional echocardiographic images by virtual endoscopy. Methods Filtering and segmentation were performed for three-dimensional echocardiographic images of 30 children. Three-dimensional echocardiographic heart models were reconstructed by four different methods: ray-casting algorithm, ray-casting algorithm (gradient threshold ranged 3-19), ray-casting algorithm (gradient threshold ranged 3-6)and ray-casting algorithm (visualization after filtering and classification, gradient threshold ranged 3-6). Visualization results were compared. Results Ray-casting algorithm with visualization after filtering and classification performed better than the other methods, and the visible heart models showed precisely anatomy structure and spatial relationship including mitral valve, tricuspid valve and atrial septal defect. Conclusion Filtering and classification is helpful for visualization of three-dimensional echocardiographic virtual endoscopy.

Key words: virtual endoscopy, filtering, segmentation, three-dimensional echocardiography