Τρίτη 17 Δεκεμβρίου 2019

Elastography reference values of facial skin elasticity.

Postepy Dermatol Alergol. 2019 Oct;36(5):626-634. doi: 10.5114/ada.2018.77502. Epub 2018 Aug 16.

Ambroziak M1, Noszczyk B2, Pietruski P2, Guz W3, Paluch Ł4.
Author information
1
Ambroziak Clinic, Warsaw, Poland.
2
Department of Plastic Surgery, Orlowski Memorial Hospital, Medical Centre of Postgraduate Education, Warsaw, Poland.
3
Department of Electroradiology, Institute of Nursing and Health Sciences, Faculty of Medicine, University of Rzeszow, Poland.
4
Department of Radiology, Gruca Orthopedic and Trauma Teaching Hospital, Medical Centre of Postgraduate Education, Otwock, Poland.
Abstract
INTRODUCTION:
With an introduction of new ultrasonographic transducers, skin elastography may find an application in dermatology and aesthetic medicine enabling direct evaluation of various pathological or natural processes.

AIM:
To verify which elastographic technique, strain elastography (SE) or shear wave elastography (SWE), is a better candidate for the reference method of facial skin elasticity examination and to determine normal ranges for elastographic parameters in various facial regions.

MATERIAL AND METHODS:
The study included 71 female volunteers (age: 40-67 years, mean: 52 ±7.5 years). All participants were subjected to SE and SWE of the skin in five anatomical regions: the forehead, suborbital regions, cheeks, nasolabial folds and chin. Reference ranges for elastographic parameters were defined as 95% confidence intervals and ±2 standard deviations and estimated by means of ROC analysis.

RESULTS:
Shear wave elastography parameters, but not SE indices, showed strong inverse correlations with the patient age. No significant correlations were found between SE and SWE parameters of the facial skin. In contrast to SWE, no significant correlations were observed between bilateral SE parameters. Based on these findings, SWE was chosen as the reference method to determine age-specific normative values for the elasticity of the facial skin. Reference and cut-off values of SWE parameters were defined for three age groups.

CONCLUSIONS:
Shear wave elastography is suitable for the determination of elastographic parameters of normal facial skin, and can be used to determine reference ranges thereof. Elasticity of the facial skin decreases considerably with age, and this factor should be considered during determination of reference values for the elastographic parameters.

Copyright: © 2018 Termedia Sp. z o. o.

KEYWORDS:
aesthetic medicine; facial aging; shear wave elastography; skin elasticity; strain elastography

PMID: 31839782 PMCID: PMC6906970 DOI: 10.5114/ada.2018.77502

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