基于摄像头的双脚脚足部脉冲过境时间差量测量用于下肢动脉狭窄的检测
IEEE transactions on bio-medical engineering
|June 18, 2025
概括
一种新的方法,双脚足部脉冲过渡时间差 (PTTD),使用脚视频来选外围动脉疾病 (PAD). PTTD在检测和分级PAD方面显示出高精度,为当前诊断工具提供了低成本,方便的替代方案.
科学领域:
- 生物医学工程 生物医学工程
- 心血管诊断心血管诊断服务
- 医疗成像医学成像
背景情况:
- 周围动脉疾病 (PAD) 会导致严重的脚部并发症,包括关和截肢.
- 目前的诊断方法,如光谱多普勒超声波和脚-手腕指数 (ABI) 是昂贵的和不方便的.
- 迫切需要一种低成本,方便的PAD查方法.
研究的目的:
- 提出和验证一种新的,低成本的查方法,用于PAD使用双脚脚脚下脉冲过渡时间差 (PTTD).
- 评估PTTD在检测和分级模拟PAD条件中的准确性.
- 在现实环境中评估PTTD的临床可行性.
主要方法:
- 开发了一种新的PAD查方法,PTTD,通过计算来自脚部RGB视频的光聚光学 (PPG) 信号之间的时间差.
- 一项模拟实验涉及19名健康受试者,通过小腿压力诱导血管阻塞 (模拟PAD).
- 在临床环境中,还从10名PAD患者收集了足部视频记录.
主要成果:
- 在检测模拟PAD时,PTTD获得了90.53%的准确性,在对模拟PAD的五个类别进行分级时达到80.00%的准确性.
- 这些结果代表了与基线输液指数 (PI) 模型相比的显著改进.
- 该方法在PAD患者的实际临床环境中证明了可行性.
结论:
- 双脚足部脉冲过渡时间差 (PTTD) 是血管阻塞的敏感指标.
- PTTD显示为一种高效,低成本和方便的工具,用于对外围动脉疾病进行查.
- 这些发现支持PTTD在PAD早期检测和管理方面的潜力.
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