laser Doppler flowmetry

Laser Doppler flowmetry is a technique that measures blood flow in small vessels by shining a laser onto the tissue. When the laser light hits moving blood cells, it gets shifted in frequency—a phenomenon known as the Doppler effect. A sensor detects these changes, which reflect the velocity and number of blood cells moving through the area. This allows clinicians to assess blood circulation non-invasively and in real-time, helping evaluate tissue health and detect issues like poor blood flow or blockages.