Wearable Device Detects Strokes with Light

Jun-11-19 A hybrid device able to diagnose a stroke with near-infrared light could offer a life-saving early warning system.

Developed by a team from Army Medical University and China Academy of Engineering Physics, the device includes a probe strapped to the forearm and a cuff around the bicep that inflates to block blood flow. The hybrid device then uses near-infrared diffuse optical spectroscopy to determine the amount of oxygen and blood in an area, along with diffuse correlation spectroscopy to measure blood flow. By offering a comprehensive profile of a body part’s blood flow (hemodynamic parameters), the device could be used to quickly and noninvasively diagnose cerebral ischemia.

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