Enhanced visualization of blood and pigment in multispectral skin dermoscopy.

Autor: Janssen L; Department of Dermatology, KU Leuven, Leuven, Belgium., Mylle S; Department of Dermatology, UZ Gent, Gent, Belgium., Van Kelst S; Department of Dermatology, KU Leuven, Leuven, Belgium., De Smedt J; Department of Dermatology, KU Leuven, Leuven, Belgium., Diricx B; Barco Healthcare, Kortrijk, Belgium., Kimpe T; Barco Healthcare, Kortrijk, Belgium., Boone M; Dermatologie Boone, Meise, Belgium., Verhaeghe E; Department of Dermatology, UZ Gent, Gent, Belgium., Brochez L; Department of Dermatology, UZ Gent, Gent, Belgium., Garmyn M; Department of Dermatology, KU Leuven, Leuven, Belgium.
Jazyk: angličtina
Zdroj: Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI) [Skin Res Technol] 2020 Sep; Vol. 26 (5), pp. 708-712. Date of Electronic Publication: 2020 Mar 29.
DOI: 10.1111/srt.12859
Abstrakt: Background and Objectives: Dermoscopy has proven its value in the diagnosis of skin cancer and, therefore, is well established in daily dermatology practice. Up until now, analogue white light dermoscopy is the standard. Multispectral dermoscopy is based on illumination of the skin with narrowband light sources with different wavelengths. Each of these wavelengths is differently absorbed by skin chromophores, such as pigment or (de)oxygenated blood. Multispectral dermoscopy could be a way to enhance the visualization of vasculature and pigment. We illustrate possible additional information by such "skin parameter maps" in some cases of basal cell carcinoma and Bowen's disease.
Methods: Using a new digital multispectral dermatoscope, skin images at multiple wavelengths are collected from different types of skin lesions. These particular images together with the knowledge on skin absorption properties, result in so called "skin parameter maps".
Results: A "pigment contrast map," which shows the relative concentration of primarily pigment, and a "blood contrast map" which shows the relative concentration of primarily blood were created. Especially, the latter is of importance in diagnosing keratinocyte skin cancer hence vascular structures are a characteristic feature, as further illustrated in the study.
Conclusions: Skin parameter maps based on multispectral images can give better insight in the inner structures of lesions, especially in lesions with characteristic blood vessels such as Bowen's disease and basal cell carcinoma. Skin parameter maps can be used complementary to regular dermoscopy and could potentially facilitate diagnosing skin lesions.
(© 2020 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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