Ms. Diana P. Skomoroha Profile

Diana P. Skomoroha

at Krasnoyarsk State Medical Univ.

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Proceedings Article | 21 April 2016 Paper

UV laser-induced fluorescence spectroscopy and laser Doppler flowmetry in the diagnostics of alopecia

Diana Skomorokha, Yulia Pigoreva, Vladimir Salmin

Proceedings Volume 9917, 991705 (2016) https://doi.org/10.1117/12.2229576

KEYWORDS: Ultraviolet radiation, Laser spectroscopy, Laser induced fluorescence, Doppler effect, Blood circulation, Fluorescence spectroscopy, Spectroscopy, Skin, Luminescence, Tissues

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Development of optical biopsy methods has a great interest for medical diagnostics. In clinical and experimental studies it is very important to analyze blood circulation quickly and accurately, thereby laser Doppler flowmetry (LDF) is widely used. UV laser-induced fluorescence spectroscopy (UV LIFS) is express highly sensitive and widely-spread method with no destructive impact, high excitation selectivity and the possibility to use in highly scattering media.

The goal of this work was to assess a correlation of UV laser-induced fluorescence spectroscopy and laser Doppler flowmetry parameters, and a possibility to identify or to differentiate various types of pathological changes in tissues according to their autofluorescence spectra.

Three groups of patients with diffuse (symptomatic) alopecia, androgenic alopecia, and focal alopecia have been tested. Each groups consisted of not less than 20 persons. The measurements have been done in the parietal and occipital regions of the sculls. We used the original automated spectrofluorimeter to record autofluorescence spectra, and standard laser Doppler flowmeter BLF-21 (Transonic Systems, Inc., USA) to analyze the basal levels of blood circulation.

Our results show that UV LIFS accurately distinguishes the zones with different types of alopecia. We found high correlation of the basal levels of blood circulation and the integrated intensity of autofluorescence in the affected tissue.

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