Analysis of the absorbance spectra of skin lesions as a helpful tool for detection of major pathophysiological changes

Abstract

Our method may offer easy and quick detection of major pathophysiological changes in skin lesions.

Non-toxic melanin production inhibitors from Garcinia livingstonei (Clusiaceae)

“…For evaluation of melanin content, cells were washed with PBS, lysed with 1N NaOH and centrifuged to remove cellular debris. The melanin content of the supernatant was then determined by optical density at 405 nm (Takiwaki et al, 2004).…”

Evaluation of dark circles of the lower eyelid: comparison between reflectance meters and image processing and involvement of dermal thickness in appearance

“…Calculation method of MI, EI, and oxygenation index (OX) from spectral reflectance of the skin Spectral reflectance data obtained using the CM2002 were converted into apparent absorbance (A 5 log 10 (1/reflectance)) (3,4). Using the absorbance value at wavelength l(A l ) and the formula defined by Feather et al (5,6), MI, EI, and OX were calculated as follows:…”

Portable hyperspectral imager for assessment of skin disorders: preliminary measurements

“…[8][9] More recently, visible light spectroscopy was shown to be useful in detecting pathophysiological changes. 10 Combining visible light imaging and spectroscopy may increase our understanding of the vascular changes that accompany this skin disorder. We describe the optical configuration and illumination that were used to image and perform spectroscopy of features of the disease using hyperspectral imaging.…”