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Journal of Biomedical Optics

Measuring skin aging using optical coherence tomography in vivo: a validation study
Author(s): Carina Trojahn; Gabor Dobos; Claudia Richter; Ulrike Blume-Peytavi; Jan Kottner
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Paper Abstract

Dermal and epidermal structures in human skin change during intrinsic and extrinsic aging. Epidermal thickness is one of the most often reported parameters for the assessment of skin aging in cross-sectional images captured by optical coherence tomography (OCT). We aimed to identify further parameters for the noninvasive measurement of skin aging of sun-exposed and sun-protected areas utilizing OCT. Based on a literature review, seven parameters were inductively developed. Three independent raters assessed these parameters using four-point scales on images of female subjects of two age groups. All items could be detected and quantified in our sample. Interrater agreement ranged between 25.0% and 83.3%. The item scores “stratum corneum reflectivity,” “upper dermal reflectivity,” and “dermoepidermal contrast” showed significant differences between age groups on the volar and dorsal forearm indicating that they were best able to measure changes during skin aging. “Surface unevenness” was associated with the skin roughness parameters, Rz and Rmax, on the inner upper arm and volar forearm supporting the criterion validity of this parameter on sun-protected skin areas. Based on the interrater agreement and the ability to differentiate between age groups, these four parameters are being considered as the best candidates for measuring skin aging in OCT images.

Paper Details

Date Published: 15 April 2015
PDF: 7 pages
J. Biomed. Opt. 20(4) 045003 doi: 10.1117/1.JBO.20.4.045003
Published in: Journal of Biomedical Optics Volume 20, Issue 4
Show Author Affiliations
Carina Trojahn, Charité Universitätsmedizin Berlin (Germany)
Gabor Dobos, Charité Universitätsmedizin Berlin (Germany)
Claudia Richter, Charité Universitätsmedizin Berlin (Germany)
Ulrike Blume-Peytavi, Charité Universitätsmedizin Berlin (Germany)
Jan Kottner, Charité Universitätsmedizin Berlin (Germany)

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