Stamp-sized stick-on ultrasound array scans 40mm into body – measures deep blood pressure

Researchers at the University of California San Diego have created a coin-sized flexible stick-on ultrasonic phased-array that allows blood pressure to be measured in arteries below surface layers. The patch is 240μm thick and stretches with strains up to 60%. “Wearable devices have so far been limited to sensing signals either on the surface of ...

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