Lihong Wang, Washington University in St. Louis (IMAGE)

Washington University in St. Louis

Lihong Wang, Washington University in St. Louis

Caption

The photoacoustic technique had been used in the 1980s to test non-biological materials for cracks, but in 2003. Wang and his colleagues published startling photoacoustic images of a rat brain, taken through the skin and skull, that showed how the brain responded when the rat's whiskers were touched. Today more papers are published about photoacoustic imaging than any other type of optical imaging, says Wang.

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WUSTL photo

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