Optical features of human skin revealed by optoacoustic mesoscopy in the visible and short-wave infrared regions

Andrei Berezhnoi, Juan Aguirre, Benedikt Hindelang, Natalie Garzorz-Stark, Murad Omar, Ulf Darsow, Kilian Eyerich, Vasilis Ntziachristos

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Detailed assessment of skin conditions or the efficacy of skin treatments could greatly benefit from noninvasively assessing the distribution of cutaneous and subcutaneous structures and biomolecules. We considered ultrawideband raster scan optoacoustic mesoscopy with an extended wavelength range from visible to short-wave infrared and observed previously unseen high-resolution images of lipids colocalized with water, melanin, and hemoglobin distribution in human skin. Based on this contrast, the technique resolves subcutaneous fat, the pilosebaceous unit with complete hair strand and bulb, dermal microvasculature, and epidermal structures. We further visualize melanoidins that form via the Maillard reaction in the ultrathin stratum corneum layer, analyze their absorption spectrum, and separate them from the melanin layer. The suggested method may allow novel interrogation of skin conditions, possibly impacting diagnostics and medical and cosmetic treatments.

Original languageEnglish
Pages (from-to)4119-4122
Number of pages4
JournalOptics Letters
Volume44
Issue number17
DOIs
StatePublished - 1 Sep 2019

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