Title :
The effects of surrounding media on the shear wave propagation in plates as related to the dispersion velocity
Author :
Vasconcelos, Luiz Henrique A. ; Nenadic, Ivan Z. ; Bo Qiang ; Urban, Matthew ; Greenleaf, James
Author_Institution :
Basic Ultrasound Res. Lab., Mayo Clinic Coll. of Med., Rochester, MN, USA
Abstract :
The calculation of dispersion curves and, therefore, the rheological properties is possible by analyzing how the different phase velocity modes behave in the medium of interest. Shear wave propagation in “thin” organs is affected by the mechanical properties of the tissues surrounding those organs. In order to obtain the proper mechanical properties of such boundary sensitive organs, an analytical solution for the dispersion curves in a plate surrounded by semi-infinite solids was derived and validated in DISPERSE software, FEM simulations and experimentally in PVA phantoms.
Keywords :
biological organs; biological tissues; biomechanics; biomedical ultrasonics; finite element analysis; phantoms; ultrasonic propagation; DISPERSE software; FEM simulations; PVA phantoms; analytical solution; boundary sensitive organs; dispersion curves; dispersion velocity; mechanical properties; phase velocity modes; plates; rheological properties; semiinfinite solids; shear wave propagation; surrounding media effects; thin organs; tissues; Dispersion; Equations; Geometry; Mathematical model; Propagation; Solids; Ultrasonic imaging; Dispersion Curves; Shear wave; Ultrasound Elastography;
Conference_Titel :
Ultrasonics Symposium (IUS), 2013 IEEE International
Conference_Location :
Prague
Print_ISBN :
978-1-4673-5684-8
DOI :
10.1109/ULTSYM.2013.0087
