Next Article in Journal
RF-Based Location Using Interpolation Functions to Reduce Fingerprint Mapping
Previous Article in Journal
Quantification Method for Electrolytic Sensors in Long-Term Monitoring of Ambient Air Quality
Article Menu

Export Article

Open AccessArticle
Sensors 2015, 15(10), 27303-27321; doi:10.3390/s151027303

Toward a Smartphone Application for Estimation of Pulse Transit Time

The Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
The Biomedical Engineering Department, Harbin Institute of Technology, Harbin150001, China
Authors to whom correspondence should be addressed.
Academic Editor: Panicos Kyriacou
Received: 13 August 2015 / Revised: 17 October 2015 / Accepted: 22 October 2015 / Published: 27 October 2015
(This article belongs to the Section Biosensors)
View Full-Text   |   Download PDF [1359 KB, uploaded 27 October 2015]   |  


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. View Full-Text
Keywords: pulse transit time (PTT); photoplethysmographic imaging (PPGi); microcamera; smartphone; signal processing pulse transit time (PTT); photoplethysmographic imaging (PPGi); microcamera; smartphone; signal processing

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Liu, H.; Ivanov, K.; Wang, Y.; Wang, L. Toward a Smartphone Application for Estimation of Pulse Transit Time. Sensors 2015, 15, 27303-27321.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top