Pulse transit time measurement using seismocardiogram, photoplethysmogram, and acoustic recordings: Evaluation and comparison

Chenxi Yang, Negar Tavassolian

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

This work proposes a novel method of pulse transit time (PTT) measurement. The proximal arterial location data are collected from seismocardiogram (SCG) recordings by placing a micro-electromechanical accelerometer on the chest wall. The distal arterial location data are recorded using an acoustic sensor placed inside the ear. The performance of distal location recordings is evaluated by comparing SCG-acoustic and SCG-photoplethysmogram (PPG) measurements. PPG and acoustic performances under motion noise are also compared. Experimental results suggest comparable performances for the acoustic-based and PPG-based devices. The feasibility of each PTT measurement method is validated for blood pressure evaluations and its limitations are analyzed.

Original languageEnglish
Pages (from-to)733-740
Number of pages8
JournalIEEE Journal of Biomedical and Health Informatics
Volume22
Issue number3
DOIs
StatePublished - May 2018

Keywords

  • Blood pressure
  • MEMS accelerometer
  • pulse transit time (PTT)
  • seismocardiography (SCG)
  • signal processing

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