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基于XCT 的心脏支架疲劳裂纹的无损检测

  

  1. 1. 华南农业大学工程学院，广东 广州 510642；
    2. 南方农业机械关键技术与装备教育部重点实验室，广东 广州 510642
  • 出版日期:2017-06-30 发布日期:2017-07-17
  • 基金资助:
    国家“863”计划专题课题(2008AA10Z221)；广东省科技计划项目(2012B010300017)

Nondestructive Detection for Fatigue Cracks of Stents Based on#br# X-ray CT Imaging

  1. 1. College of Engineering, South China Agricultural University, Guangzhou Guangdong 510642, China;
    2. South Agricultural Machinery and Equipment Key Lab of Ministry of Education, Guangzhou Guangdong 510642, China
  • Online:2017-06-30 Published:2017-07-17

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摘要： 心脏支架是心脏介入手术中常用的医疗器械，在受到心脏跳动的交变应力作用下，
产生的疲劳裂纹是导致心脏支架损害的重要因素之一。X-CT 检测技术是目前医学领域中的先
进检测技术之一，本文使用X-CT 对一只带有裂纹的心脏支架扫描，获取X-CT 序列图；并对
心脏支架X-CT 序列图像预处理和三维重建，获取CT 图像三维重建后的心脏支架三维模型，
以此分辨出心脏支架上的裂纹或缺陷，研究表明X-CT 技术可以很好地检测心脏支架疲劳裂纹。

关键词: X-CT, 心脏支架, 疲劳裂纹, 无损检测

Abstract: Stents are commonly used in cardiac interventional procedures. Under the action of
alternating stress, fatigue crack is one of the important factors leading to Stents damages. X-CT
detection technology is one of the advanced detection technologies in the field of medicine. We use
XCT to scan a heart stents with crack and obtain X-ray CT sequence diagram first. Then do the stent
X-CT sequence image pre-processing and 3D reconstruction to obtain heart stent 3D visual CT
images and to distinguish cracks or defects of heart support. The study shows that X-CT can well
support heart fatigue crack detection.

Key words: X-CT, stent, fatigue crack, nondestructive detection