在Björk-Shiley形形形中,对出口支架分离的定量检测
K A Powell1, N A Obuchowski, K D Mueller
1Department of Biomedical Engineering, Cleveland Clinic Foundation, OH 44195, USA. powell@bme.ri.ccf.org
Circulation
|December 15, 1996
概括
一种新的客观后处理技术评估了Björk-Shiley形形心脏门支架的完整性. 这种方法有助于识别有骨折风险的门,提高患者的安全性和出口支架骨折的诊断准确性.
科学领域:
- 生物医学工程 生物医学工程
- 心血管成像 - 心血管成像
- 材料科学 材料科学 材料科学
背景情况:
- 伯克-希利凸 (BSCC) 心脏门有灾难性的出口支架骨折 (OSF) 的历史.
- 大约三分之二报告的OSF导致患者死亡.
- 单脚分离 (SLS) 在完整的OSF之前,表示一个关键故障点.
研究的目的:
- 开发一个客观的后处理技术来评估BSCC心脏门出口支架的完整性.
- 用电影射线图像来定量评估支架腿的完整性.
- 为了识别BSCC心脏门在完全OSF的风险.
主要方法:
- 获取了22个人的电影血管图像 (12个完好,10个SLS门).
- 验证了门的状态ex vivo.
- 评估了SLS的定量措施,包括像素强度 (DIPI) 比率的下降和间隙半宽.
主要成果:
- 开发了一个客观的后处理技术来评估出口支架的完整性.
- DIPI比率和差距半宽被确定为SLS的诊断指标.
- 基于DIPI比率的模型实现了接收器运行特征曲线下的面积为0.892.2.
结论:
- 开发了一种客观的后处理技术,用于评估BSCC心脏门支架在电影放射图像中的完整性.
- 该技术提供了对支架完整性的客观和定量评估.
- 客观审查显示了与高度特异性的主观专家审查相比较的敏感性.
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