Russian Researchers Use Skin Color to Detect Vascular Disorders
Scientists at ITMO University have developed a video-based method that can assess blood circulation in limbs without physical contact.
Researchers at ITMO University in St. Petersburg have introduced a technology for contactless measurement of blood flow in the hands. Previously, such measurements relied on two tourniquets—one to block venous outflow and another to track changes in blood volume. The new approach eliminates mechanical pressure altogether.
Instead, the system records a video of the limb and analyzes subtle shifts in skin tone as blood fills the vessels. Specialized mathematical algorithms process the video stream and isolate microscopic color fluctuations associated with blood movement.
Comparable Accuracy
The developers compared the technique with conventional diagnostic methods and found its accuracy to be comparable. At the same time, the new procedure is faster and more comfortable for patients.
The technology could be useful in diagnosing vascular disorders, particularly for people with diabetes, where impaired blood circulation can lead to severe complications.
So far, testing has been limited to measurements in the hands. The team plans to adapt the method for assessing blood flow in the legs, where traditional techniques tend to produce less stable results.
According to lead developer Alexey Kamshilin, the new tools could help physicians monitor treatment progress and evaluate drug effectiveness. Digital video analysis may also serve as a foundation for mobile medical services and telemedicine consultations.
