Sound Waves Detect Skin Cancer

(Optical Society of America) Researchers at the University of Missouri-Columbia have developed a technique to detect the spread of skin cancer cells through the blood by listening to their sound. The minimally invasive technique uses a laser to make the melanoma cells emit ultrasound noise. The technique could enable oncologists to spot the early signs of metastases from as few as ten cancer cells in a blood sample - before they even settle in other organs.

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