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Photoacoustic tomography bridges macroscopic, microscopic

from Medscape Medical News

Photoacoustic tomography combines the best features of optical imaging and ultrasound to provide multiscale, multicontrast images of biological tissue, according to a review article published in Science. Optical techniques produce images with quality resolution and strong contrasts, but only at tissue depths up to about 1 mm, as a result of photon scattering. "Ultrasound scattering is about 1,000 times weaker than optical scattering," said lead author Lihong V. Wang, Ph.D., the Gene K. Beare Distinguished Professor of Biomedical Engineering in the School of Engineering and Applied Science at Washington University in St. Louis, in a telephone interview with Medscape Medical News. more

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