Ashkan Javaherian - A full-3D ray-based inversion approach for ultrasound computed tomography of the breast
| Dates: | 17 March 2020 |
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| Times: | 12:00 - 13:00 |
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| What is it: | Seminar |
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| Organiser: | Department of Mathematics |
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| Who is it for: | University staff, External researchers, Current University students |
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| Speaker: | Dr Ashkan Javaherian |
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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.
Speaker
Dr Ashkan Javaherian
Organisation: UCL
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Frank Adams 1
Alan Turing Building
Manchester
