Toward a Smartphone Application for Estimation of Pulse Transit Time.
Toward a Smartphone Application for Estimation of Pulse Transit Time.
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用于估计脉搏传播时间的智能手机应用程序
DOI：
10.3390/s151027303
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发表时间：
2015-10-27
期刊：
影响因子：
--
通讯作者：
Wang L
中科院分区：
文献类型：
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作者：
Liu H;Ivanov K;Wang Y;Wang L
脉搏传导时间（PTT）是与血管壁的弹性和顺应性以及血压变化直接相关的重要生理参数。本文提出了一种基于光电体积描记成像（PPGI）的PTT估计方法。该方法利用两个相对的摄像机从食指指尖和前额太阳穴同时采集PPGi波形信号。开发了一种用于检测PPGi信号中的最大值和最小值的算法，该算法包括用于对这些点的真实的位置进行插值的技术。我们将我们的PTT测量结果与从当前方法标准中获得的结果进行了比较。统计结果表明，我们提出的方法测量的PTT表现出良好的相关性与建立的方法。所提出的方法特别适合在双摄像头智能手机中实现，这可以促进受心脏并发症影响的人群中的PTT测量。
Pulse transit time (PTT) is an important physiological parameter that directly correlates with the elasticity and compliance of vascular walls and variations in blood pressure. This paper presents a PTT estimation method based on photoplethysmographic imaging (PPGi). The method utilizes two opposing cameras for simultaneous acquisition of PPGi waveform signals from the index fingertip and the forehead temple. An algorithm for the detection of maxima and minima in PPGi signals was developed, which includes technology for interpolation of the real positions of these points. We compared our PTT measurements with those obtained from the current methodological standards. Statistical results indicate that the PTT measured by our proposed method exhibits a good correlation with the established method. The proposed method is especially suitable for implementation in dual-camera-smartphones, which could facilitate PTT measurement among populations affected by cardiac complications.