Key result
Ultra-thin piezoelectric ultrasonic sensors reliably and continuously measure carotid artery diameter pulse waves.
Why the study?
Current ultrasonic devices rely on rigid probes that require precise operator control, which inevitably compresses blood vessels and causes erroneous pulse wave recordings.
Does a flexible piezoelectric ultrasonic sensor reliably measure continuous carotid diameter pulse waves in volunteers?
Does a flexible piezoelectric ultrasonic sensor reliably measure continuous carotid diameter pulse waves in volunteers?
A newly developed flexible, ultra-thin ultrasonic sensor provides reliable, continuous monitoring of carotid pulse waves without compressing tissue.
May enable wearable continuous carotid monitoring; leaves open clinical validation and outcome studies.
Pulse wave signals can reflect the status of the human cardiovascular system, and continuous pulse wave monitoring can guide disease diagnosis. While current ultrasonic devices can perform reliable diameter measurements, their rigid ultrasonic probes rely on precise control by the operator, which inevitably compresses the blood vessels and leads to erroneous recording. In this paper, a flexible piezoelectric ultrasonic sensor was proposed to continuously measure pulse waves by tracking the motion of the vessel wall. The flexible sensor is light (0.9 g), ultra-thin (600 <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">)</tex> , self-adhesive to the skin, and does not compress human tissue. On this basis, a measurement system was designed to monitor the carotid arteries of volunteers. The results showed that the flexible ultrasonic sensor could continuously measure the diameter pulse wave with high reliability.
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Xie et al. (2023) studied Cardiovascular monitoring. Flexible piezoelectric ultrasonic sensor was evaluated on Continuous measurement of diameter pulse wave. A flexible, ultra-thin (600 μm), and light (0.9 g) piezoelectric ultrasonic sensor could continuously measure the diameter pulse wave of the carotid arteries with high reliability.
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