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Study: Selfies could be used to check your blood pressure

Study: Selfies could be used to check your blood pressure

Researchers have tested a technology called transdermal optical imaging that measures blood pressure by detecting blood flow changes in smartphone-captured facial videos. "This study shows that facial video can contain some information about systolic blood pressure," said researcher Ramakrishna Mukkamala, Professor at the Michigan State University.

Ambient light penetrates the skin's outer layer allowing digital optical sensors in smartphones to visualise and extract blood flow patterns, which transdermal optical imaging models can use to predict blood pressure. "High blood pressure is a major contributor to cardiovascular disease - a leading cause of death and disability. To manage and prevent it, regular monitoring of one's blood pressure is essential," said study lead author Kang Lee, Professor at the University of Toronto in Canada.

"Cuff-based blood pressure measuring devices, while highly accurate, are inconvenient and uncomfortable. Users tend not to follow American Heart Association guidelines and device manufacturers' suggestion to take multiple measurements each time," Lee said.

For the study, published in the journal Circulation: Cardiovascular Imaging, the research team measured the blood flow of 1,328 Canadian and Chinese adults by capturing two-minute videos using an iPhone equipped with transdermal optical imaging software. Read More...

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