Reliable assessment of forearm photoageing by high-frequency ultrasound: a cross-sectional study
| Autor: | L. de Vasconcelos Nasser Caetano, J. L. M. Soares, Ediléia Bagatin, Hélio Amante Miot |
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| Rok vydání: | 2015 |
| Předmět: |
Adult
0301 basic medicine Aging Pathology medicine.medical_specialty Skin ageing Light Cross-sectional study Pharmaceutical Science Dentistry Dermatology 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine Colloid and Surface Chemistry Forearm Drug Discovery medicine Humans Ultrasonics Safety testing Aged Aged 80 and over business.industry Middle Aged Skin Aging Cross-Sectional Studies 030104 developmental biology medicine.anatomical_structure Chemistry (miscellaneous) Ultrasonography business High frequency ultrasound |
| Zdroj: | International Journal of Cosmetic Science. 38:170-177 |
| ISSN: | 0142-5463 |
| DOI: | 10.1111/ics.12272 |
| Popis: | High-frequency ultrasound is a non-invasive tool used in skin ageing research to assess dermis thickness and echogenicity. This study evaluated the reliability of a range of high-frequency ultrasound parameters and tested their correlation with age and a validated clinical scale for the assessment of forearm skin photoageing; the difference between two body sites according to environmental exposition patterns was also investigated.Twenty-three volunteers aged 28-82 years were divided into three groups according to forearm photoageing degree. A 20 MHz ultrasound unit was used to obtain cross-sectional images of the skin by two trained investigators on two different sites: the dorsal forearm (chronically photoexposed skin) and the proximal medial arm (non-photoexposed skin). Several echogenicity parameters were studied for each skin compartment: total dermis, upper dermis and lower dermis, and the ratio between upper and lower dermis.The intraclass correlation coefficient (for complete agreement) between investigators was higher for upper and total dermis echogenicity measures compared with the lower dermis. At the non-photoexposed site, the upper and lower dermis parameter ratio was better correlated with age. At the photoexposed area, total dermis parameters demonstrated higher correlations with clinical score.The authors discuss the choice of parameters for forearm photoageing assessment using high-frequency ultrasound. |
| Databáze: | OpenAIRE |
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