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- W2086293671 abstract "In order to identify and characterize the sonographic variations between different age groups, 48 subjects, 24 aged 27–30, and 24 over 60, were studied with a 20-MHz B scanner on six skin sites. Images were evaluated by the instrument’s standard programme and by a new image analysis software package enabling the characterization of steady structures or transitory functional aspects of skin reactions, by highlighting areas in which the echo amplitudes are included within selected values, and by calculating their extension. Three bands were selected as intervals of interest, respectively, highlighting hyporeflecting parts of the dermis, tissue reflecting with intermediate amplitude values and hyperreflecting epidermis and dermis. This method was employed to assess skin thickness, demonstrating its decrease in elderly skin, to characterize and quantify the hypo-echogenic subepidermal band appearing in the elderly at volar and dorsal forearm skin, and to evaluate echogenicity of the upper and lower dermis. Our data show that there is a great regional variation in the behaviour of ultrasound reflection of elderly skin in respect to the skin of young subjects. However, a general trend can be identified, consisting in a shift from low-intensity ultrasound echoes, characteristic in the dermis of young subjects, to intermediate or high reflection amplitudes, which are more frequent in elderly skin. Thus, the echographic method provides two parameters for the evaluation of skin aging. Besides an accurate and early assessment of skin atrophy, it also enables an evaluation of physical properties of the skin, which do not influence the morphological aspect in microscopy, but induce variations of the acoustic behavior which are expressed by a modification ofthe reflectivity to ultrasound." @default.
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- W2086293671 date "1994-01-01" @default.
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- W2086293671 title "Echographic Evaluation with Image Analysis of Normal Skin: Variations according to Age and Sex" @default.
- W2086293671 doi "https://doi.org/10.1159/000211295" @default.
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