Blood flow-imaging watch lets you see inside your body on-the-go
Photoacoustic imaging systems provide a high-resolution glimpse into the body, but they’re bulky. Now, researchers have developed a miniaturized version that fits into a watch, with hardware contained in a backpack that’s the same weight as the average five-month-old baby. The device is a non-invasive way of measuring how well the heart is working.Simply put, photoacoustic imaging works like this. First, an object absorbs light, in this case laser pulses. The absorbed optical energy is converted into heat, generating a…