Introducing Contactless Blood Pressure Assessment Using a High Speed Video Camera

Journal of Medical Systems
In cheol Jeong, Joseph Finkelstein

Abstract

Recent studies demonstrated that blood pressure (BP) can be estimated using pulse transit time (PTT). For PTT calculation, photoplethysmogram (PPG) is usually used to detect a time lag in pulse wave propagation which is correlated with BP. Until now, PTT and PPG were registered using a set of body-worn sensors. In this study a new methodology is introduced allowing contactless registration of PTT and PPG using high speed camera resulting in corresponding image-based PTT (iPTT) and image-based PPG (iPPG) generation. The iPTT value can be potentially utilized for blood pressure estimation however extent of correlation between iPTT and BP is unknown. The goal of this preliminary feasibility study was to introduce the methodology for contactless generation of iPPG and iPTT and to make initial estimation of the extent of correlation between iPTT and BP "in vivo." A short cycling exercise was used to generate BP changes in healthy adult volunteers in three consecutive visits. BP was measured by a verified BP monitor simultaneously with iPTT registration at three exercise points: rest, exercise peak, and recovery. iPPG was simultaneously registered at two body locations during the exercise using high speed camera at 420 frames per sec...Continue Reading

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Citations

Sep 15, 2016·Annals of the New York Academy of Sciences·Joseph Finkelstein, In Cheol Jeong
Jul 4, 2017·Sensors·Guangfei ZhangRonald M Aarts
Jun 14, 2018·Biomedizinische Technik. Biomedical Engineering·Sebastian ZaunsederHagen Malberg
Aug 7, 2019·Circulation. Cardiovascular Imaging·Ramakrishna Mukkamala
Nov 5, 2019·Australasian Physical & Engineering Sciences in Medicine·Solmaz RastegarAndrew Lowe
Jul 19, 2020·Clinical Journal of the American Society of Nephrology : CJASN·Jay A PanditDaniel Batlle
Dec 22, 2020·Computers in Biology and Medicine·Yao GuoWei Chen
Nov 4, 2021·Physiological Measurement·Aleksandra ZienkiewiczTeemu Myllylä
Sep 12, 2020··Hongbo NiMingzhe Guo

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