Phase velocity sensitivity of ultrasonic guided modes propagating in a layered bone model: a simulation study

Speaker:Prof. Lawrence H Le (University of Alberta)

Time and Date: 9:00 - , Mar. 20, 2017

Place: Room 521, Physics Building, Handan Campus

 

 

Abstract

This work is part of our project to extract bone parameters using axial transmission ultrasound data. In this presentation, I will systematically present the sensitivity analysis of leaky Lamb modes to the geometry and material characteristics of a layered bone model by means of semi-analytical finite-element modeling. The sensitivity test is aimed at answering a crucial question. Can ultrasonic guided waves detect changes in soft tissue thickness, cortical thickness and velocities? The study is important as it offers guidance to the parameter inversion process about the optimal selection of guided modes and regions of sensitivity for better inversion results.