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Collagen is a rich component in skin that provides skin structure integrity; however, its contribution to the absorption and scattering properties of various types of skin has not been extensively studied. We considered the contribution of the collagen to the absorption spectrum of in vivo normal skin and keloids of 12 subjects derived from our diffuse reflectance spectroscopy (DRS) system in the wavelength range from 550 to 860 nm. It was found that the collagen concentration, the hemoglobin oxygen saturation, and the reduced scattering coefficient of keloids were remarkably different from that of normal skin. Our results suggest that our DRS system could assist clinicians in understanding the functional and structural condition of keloid scars. In the future, we will evaluate the accuracy of our system in the keloid diagnosis and investigate the applicability of our system for other skin-collagen-related studies.

journal of biomedical optics

Noninvasive evaluation of collagen and hemoglobin contents and scattering property of<i>in vivo</i>keloid scars and normal skin using diffuse reflectance spectroscopy: pilot study

Noninvasive evaluation of collagen and hemoglobin contents and scattering property ofin vivokeloid scars and normal skin using diffuse reflectance spectroscopy: pilot study