Development and characterization of viscoelastic polydimethylsiloxane phantoms for simulating arterial wall motion

Numerical Study of a Thrombus Migration Risk in Aneurysm After Coil Embolization in Patient Cases: FSI Modelling

“…There are different options for modelling the elasticity of this multilayer wall. The cerebral vessels are less elastic than other larger arteries [ 45 ], and deformations are generally small, so some researchers have considered them as rigid walls [ 29 , 46 ], and others considered them as viscoelastic material properties [ 47 ], most researchers do not consider the anisotropic behaviour of the collagen fibers and use simplified elastic or hyperelastic models [ 48 , 49 ].…”

“…The model used for the artery wall material in this research is an isotropic linear elastic model governed by Hooke's Law, with 1.8 MPa for the Young’s modulus [ 46 ] and 0.45 the elastic isotropic Poisson’s ratio [ 26 , 47 ]. The artery walls density was set to 1050 kg/m 3 , in the range of values used to model this tissue by other previous researches [ 29 , 50 ].…”

Photoacoustic method for measuring the elasticity of polydimethylsiloxane at various mixing ratios

“…PDMS is used for phantom preparation in various imaging and elasticity studies [ 4 , 5 ], because it is transparent and has an approximate refractive index value of 1.43, an acoustic impedance of 150 KRayls, and a sound velocity of approximately 1300 m/s [ 6 , 7 ]. Therefore, the characteristics of polydimethylsiloxane composites become important and measured by many researches [ [8] , [9] , [10] , [11] , [12] ] and they are often made as the phantom of blood vessels [ 7 ]. Per the laws of elasticity and biomechanics, a sample generates responses related to phenomena such as the redistribution of morphological displacements, strain, and velocity [ 13 ].…”