4J-6 In Vivo High Frequency Elastography for Mechanical Behavior of Human Skin Under Suction Stress: Elastograms and Kinetics of Shear, Axial and Lateral Strain Fields

Mofid, Yassine; Gahagnon, Solène; Patat, F.; Ossant, F.; Josse, Gwendal

doi:10.1109/ultsym.2006.274

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2009

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“…It is based on a 20MHz device (Dermcup 2020 TM , GIP Ultrasouns, Tours, France) which is used to scan the skin during a stress. This analyse was previously performed through an extensometer (Mofid et al, 2006) and was recently extended to the suction test (Ossant et al, 2006). Ultrasound elastograms are computed through intercorrelation of the radio-frequency lines between two successive images.…”

Section: Resultsmentioning

confidence: 99%

A human skin ultrasonic imaging to analyse its mechanical properties

Delalleau

Josse

George

et al. 2009

TECM

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The analysis of the skin mechanical behaviour is a key-point for different field of investigation. As the skin is a complex structure, studies are usually based on inverse methods that compare experimental and finite element numerical results. Besides the considered behaviour law, one of the most important question concerns the geometrical aspects of the skin tissue. In this paper, it is shown how high frequency ultrasound imaging helps the calculation of skin mechanical parameters. The hypodermis influence is firstly discussed through elastographic analyses. A specific procedure to measure the dermis thickness is then proposed to highlight that such a measurement must be considered to draw reliable conclusions. The obtained results are finally discussed to point out the interest of such simplifications for the study of more complex behaviour laws.

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Section: Resultsmentioning

confidence: 99%