Ultrasoun Tomography : applocation to breast and bone Imaging

الملخص EN

Ultrasound tomography (UT) is an imaging technique which has proved effective for soft-t issue (breast, liver, testicles...) characterization.

More recently, the use of UT has been envisages for bone imaging.

In this field, the large variations of impedance distribution (high contrast) require that a finer model of wave propagation be integrated in the reconstruction scheme, Regarding echography, the main goal of UT is to provide both high contrast and resolution imaging and multi-parametric imaging (speed of sound, attenuation, stiffness tensor...).

This quantitative information can be processed by Computer Assisted Diagnosis (CAD) systems.

Within the frame of soft-tissue imaging, we will restrict our application to breast inspection, in the case of highly heterogeneous media such as bones, extended inversion schemes are proposed.

The various reconstruction procedures are set against experiments and the image qualities are compared.