Characterization of Tissue-mimicking Materials Using Magnetic Induced Shear Wave

Estimation of the tissues mechanical properties of is an important information to the pathologies diagnosis. A novel ultrasound-based methods use shear wave dispersion for this purpose. This paper describes the Magneto Motive Ultrasound (MMUs) implementation to evaluate mechanical parameters of paraffin phantoms. This technique can be applied in vivo as an alternative to biopsy. Ultrasound equipment was used with a magnetic system for generating seismic waves in paraffin phantom containing a magnetic inclusion. Consistent values of elastic and viscous modulus (μ1 = 8.4 ± 1.5 kPa; μ2 = 5.3 ± 2.2 Pa.s) were obtained. The evaluation of MMUs technique for estimating mechanical parameters of soft tissue was satisfactory, but for stiffer inclusions higher temporal resolution is needed.