Full-waveform inversion with resolution proxies for in-vivo ultrasound computed tomography
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Date
2023
Publication Type
Conference Paper
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yes
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Abstract
We present an acoustic multi-stage full-waveform inversion (FWI) using in-vivo data of a mouse, acquired with transmission-reflection ultrasound. Our method (1) provides high-resolution images of the sound speed in soft tissue and bone, (2) significantly sharpens reflection images by using the reconstructed sound speed map as a background model, and (3) quantifies resolution lengths. The computational cost inherent to standard FWI is reduced by applying source encoding. We show that this multi-stage approach results in an aberration-corrected reflection image. The resolution lengths in the sound speed reconstruction are measured from the spread of a reconstructed point perturbation, which provides proxies for the spatial confidence levels and highlights areas where the resolution in the reflection image will benefit from the FWI background model.
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Publication status
published
Editor
Book title
2023 IEEE International Ultrasonics Symposium (IUS)
Journal / series
Volume
Pages / Article No.
10308297
Publisher
IEEE
Event
61st IEEE International Ultrasonics Symposium (IUS 2023)
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Tomography; Full-waveform; Inverse problem; Resolution analysis
Organisational unit
03971 - Fichtner, Andreas / Fichtner, Andreas
01664 - DR Erd- und Planetenwissenschaften / DR Earth and Planetary Sciences