Ultrasonic observation on impact of plateau sunlight radiation on skin thickness and hardness of normal subjects
10.13929/j.1003-3289.201901119
- VernacularTitle: 超声观察高原日光照射对正常人皮肤厚度及硬度的影响
- Author:
Yuanjiao TANG
1
Author Information
1. Department of Ultrasound, West China Hospital, Sichuan University
- Publication Type:Journal Article
- Keywords:
Hardness;
Plateau sunlight radiation;
Skinfold thickness;
Ultrasonography
- From:
Chinese Journal of Medical Imaging Technology
2019;35(9):1384-1388
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To observe the impact of plateau sunlight radiation on skin thickness and hardness with high frequency ultrasound and shear wave elastography (SWE). Methods: Totally 30 volunteers from plateau areas (plateau area group) and 48 volunteers from non-plateau areas (non-plateau area group) were enrolled. Skin thickness and skin hardness of right middle finger, right forearm, anterior chest wall and abdominal wall were measured with high frequency ultrasound and SWE and then compared between two groups. Diagnostic test of the above parameters which showed significant differences were performed, and ROC curve were drawn. Results: Skin thickness, maximum elastic value (Emax), average elastic value (Emean), minimum elastic value (Emin) and standard deviation (Esd) of right middle fingers, skin Emax, Emean, Emin of right forearms and anterior chest walls, skin Emax, Emean, Emin, Esd of abdominal walls of plateau area group were all higher than those of non-plateau area group (all P<0.05), while skin thickness of anterior chest wall and abdominal wall of plateau area group were lower than those of non-plateau area group (both P<0.05). Skin Emax, Emean, Emin of abdominal wall had the largest AUC in diagnosis of plateau skin, which were all >0.95. Taken skin Emax=13.30 kPa, Emean=12.45 kPa, Emin=11.50 kPa of abdominal wall as cut off values, the sensitivities in diagnosis of plateau skin were all 100%, and specificities were 85.40%, 87.50% and 85.40%, respectively. Conclusion: Plateau sunlight radiation lead to changes of skin thickness and make the skin harden. Skin Emax, Emean, Emin of abdominal wall have the highest diagnostic efficiencies.
