Apple Inc. and other major smartphone companies are focusing on technology to measure BP with the help of selfie. Experts at the University of Toronto and Hospital of Hzngzhou Normal University in China have tested a technology termed as ‘transdermal optical imaging’. This technology measures BP by separating blood flow changes in facial videos captured on a smartphone. Ambient light penetrates the skin’s external layer and permitting digital optical sensors to reflect and extract blood flow patterns. Such transdermal optical imaging models are used to predict blood pressure. Smartphones take over 900 images in half-minute to record BP. Currently, such test is done on light-skinned people in Asia and Europe.
As per Ramkrishna Mukmala, who is Michigan State University professor, the facial video may contain some data related to systolic blood pressure. According to a report released by Quartz, the systolic blood pressure is recorded by 95% accuracy. And diastolic blood pressure with pulse pressure at around 96% accuracy. Besides, technology’s high accuracy is within global standards for devices used to measure blood pressure. The report also assumed that many people are not aware that they are suffering from high blood pressure. Also, the number of individuals with high cholesterol levels, high blood pressure, or obesity due to high-calorie intake is increasing and resulting in a rise in the number of patients with heart diseases. According to Heart Disease and Stroke Statistics by the American Heart Association, every year around 735,000 Americans have a heart attack.
As per data published in the journal Circulation: Cardiovascular Imaging, the researchers studied blood flow of more than 1,300 people in Canada and China. It captures 2-minute video using an iPhone outfitted with transdermal optical imaging software. As per Kang Lee, Professor at the University of Toronto, high blood pressure is a key contributor to cardiovascular disease. It is a major reason for death and disability. To maintain and limit it, frequent monitoring is essential.