Tuesday, November 12, 2019
They capture one of the most basic functions in the human body — blood flow through the arteries, and then back to the heart through the veins — but in a mind-blowingly sophisticated way.
A camera the size of a Mars bar points toward the patient reclined on a medical exam table. It doesn't touch the patient's skin, or even get close enough to really invade personal space. But it's able to pick up the subtle changes in the surface of the skin, and translate them into vivid images of the blood flowing powerfully up the carotid arteries to the brain in a flush of red, and then back via the jugular vein outlined in blue.