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Blood pressure can be detected with a video shot from a smartphone

In the future, detecting blood pressure could be at least as easy as taking a selfie: this is what makes us understand research published in Circulation: Cardiovascular Imaging according to which a transdermal optical imaging technology can be used to measure human blood pressure by detecting only micro-changes in the face through a video, even one shot from a smartphone.

Even today, smartphones have cameras that are sensitive enough to detect the ambient light that enters the external state of the skin of the face. With this information, you can create a model of blood flow that can then be used to monitor the same blood pressure without having to resort to complicated devices.

As reported by Kang Lee, professor of neuroscience at the University of Toronto, Canada, today arterial hypertension is one of the main human diseases and one of the main causes of death precisely because adequate daily or periodic monitoring is not performed in subjects risk.

Furthermore, the devices available today are quite inconvenient to use or not very precise so that often the same manufacturers of these devices recommend making multiple measurements each time and making an average. Lee and his new device have already been tested on 1328 Canadian and Chinese adults.

The software was installed on an iPhone and through the app installed on the device, the researchers were able to measure the systolic, diastolic and pulse pressure, measurements taken from a video shot from the same camera as the smartphone.

Currently, the video to obtain the necessary data must last at least two minutes but the researchers are trying to lower this duration to 30 seconds to make the process even more user-friendly.