To look just below the skin of psoriasis patients, German researchers have developed a subtle techique using lasers to excite ultrasound waves. The technique, dubbed RSOM (raster-scan optoacoustic mesoscopy), uses a weak laser pulse which excites the tissue of interest. Absorbed energy heats the tissue slightly, causes momentary expansion, which generates mechanical vibrations at ultrasound ...
Read full article: Novel technique looks beneath the skin
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