Continuous Non-Invasive Blood Pressure Measurement Using 60 GHz-Radar—A Feasibility Study

Vysotskaya N, Will C, Servadei L, Maul N, Mandl C, Nau M, Harnisch J, Maier A (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Original Authors: Nastassia Vysotskaya, Christoph Will, Lorenzo Servadei, Noah Maul, Christian Mandl, Merlin Nau, Jens Harnisch, Andreas Maier

Book Volume: 23

Pages Range: 4111

Issue: 8

DOI: 10.3390/s23084111

Abstract

Blood pressure monitoring is of paramount importance in the assessment of a human’s cardiovascular health. The state-of-the-art method remains the usage of an upper-arm cuff sphygmomanometer. However, this device suffers from severe limitations—it only provides a static blood pressure value pair, is incapable of capturing blood pressure variations over time, is inaccurate, and causes discomfort upon use. This work presents a radar-based approach that utilizes the movement of the skin due to artery pulsation to extract pressure waves. From those waves, a set of 21 features was collected and used—together with the calibration parameters of age, gender, height, and weight—as input for a neural network-based regression model. After collecting data from 55 subjects from radar and a blood pressure reference device, we trained 126 networks to analyze the developed approach’s predictive power. As a result, a very shallow network with just two hidden layers produced a systolic error of 9.2±8.3 mmHg (mean error ± standard deviation) and a diastolic error of 7.7±5.7 mmHg. While the trained model did not reach the requirements of the AAMI and BHS blood pressure measuring standards, optimizing network performance was not the goal of the proposed work. Still, the approach has displayed great potential in capturing blood pressure variation with the proposed features. The presented approach therefore shows great potential to be incorporated into wearable devices for continuous blood pressure monitoring for home use or screening applications, after improving this approach even further.

Authors with CRIS profile

Related research project(s)

Involved external institutions

Infineon Technologies AG Germany (DE) Technische Universität München (TUM) Germany (DE)

How to cite

APA:

Vysotskaya, N., Will, C., Servadei, L., Maul, N., Mandl, C., Nau, M.,... Maier, A. (2023). Continuous Non-Invasive Blood Pressure Measurement Using 60 GHz-Radar—A Feasibility Study. Sensors, 23, 4111. https://dx.doi.org/10.3390/s23084111

MLA:

Vysotskaya, Nastassia, et al. "Continuous Non-Invasive Blood Pressure Measurement Using 60 GHz-Radar—A Feasibility Study." Sensors 23 (2023): 4111.

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