Non‐invasive imaging in dermatology and the unique potential of Raster‐Scan Optoacoustic Mesoscopy (RSOM)

Abstract

In recent years, several non‐invasive imaging methods have been introduced to facilitate diagnostics and therapy monitoring in dermatology. The microscopic imaging methods are restricted in their penetration depth, while the mesoscopic methods probe deeper but provide only morphological, not functional, information. "Raster‐scan optoacoustic mesoscopy" (RSOM), an emerging new imaging technique, combines deep penetration with contrast based on light absorption, which provides morphological, molecular, and functional information. Here we compare the capabilities and limitations of currently available dermatological imaging methods and highlight the principles and unique abilities of RSOM. We illustrate the clinical potential of RSOM, in particular for non‐invasive, high‐resolution diagnosis and monitoring of inflammatory and oncological skin diseases.

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