Ashkan Javaherian - A full-3D ray-based inversion approach for ultrasound computed tomography of the breast
|Dates:||17 March 2020|
|Times:||12:00 - 13:00|
|What is it:||Seminar|
|Organiser:||Department of Mathematics|
|Who is it for:||University staff, External researchers, Current University students|
|Speaker:||Dr Ashkan Javaherian|
Join us for this research seminar, part of the SQUIDS (Statistics, quantification of uncertainty, inverse problems and data science) seminar series.
Abstract: Full-3D transmission Ultrasound Tomography (UST) of the breast using full-wave inversion is computationally challenging because of a large number of simulations required for computation of each iteration of an associated iterative algorithm for solving this nonlinear inverse problem. Additionally, full-wave inversion methods require a good initial guess, which is often provided using a ray-based UST method. My talk is about an efficient two-point ray-based inversion approach for full-3D tomography of the breast using a shooting method. I will start with an introduction about UST. I will then explain a two-point ray tracing approach based on a shooting method, and how we extend it to a 3D geometry for full-3D UST of the breast. Finally, I will present our numerical results. This talk may be more interesting for researchers working in the fields related to inverse problem, seismic imaging or acoustics.
Dr Ashkan Javaherian
Travel and Contact Information
Frank Adams 1
Alan Turing Building