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September 2001

Virtual Biopsy

Medicine

By Naomi Freundlich

Last year, doctors told 1.3 million patients in the United States that they had skin cancer. But still more people underwent painful biopsies-in which a suspect mole is cut off, sliced into thin sections and examined under a microscope-on what turned out to be healthy skin. A new laser-based imaging device could allow doctors to peer painlessly into the skin and diagnose growths without surgical biopsies.

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