Pulse-echo ultrasound attenuation tomography.

Korta Martiartu, Naiara; Salemi Yolgunlu, Parisa; Frenz, Martin; Jaeger, Michael (2024). Pulse-echo ultrasound attenuation tomography. Physics in medicine and biology, 69(11) Institute of Physics Publishing IOP 10.1088/1361-6560/ad41b2

[img]
Preview
Text
Korta_Martiartu_et_al_2024_Phys._Med._Biol._10.1088_1361-6560_ad41b2.pdf - Accepted Version
Available under License Creative Commons: Attribution (CC-BY).

Download (5MB) | Preview

Objective.We present the first fully two-dimensional attenuation imaging technique developed for pulse-echo ultrasound systems. Unlike state-of-the-art techniques, which use line-by-line acquisitions, our method uses steered emissions to constrain attenuation values at each location with multiple crossing wave paths, essential to resolve the spatial variations of this tissue property.Approach.At every location, we compute normalized cross-correlations between the beamformed images that are obtained from emissions at different steering angles. We demonstrate that their log-amplitudes provide the changes between attenuation-induced amplitude losses undergone by the different incident waves. This allows us to formulate a linear tomographic problem, which we efficiently solve via a Tikhonov-regularized least-squares approach.Main results.The performance of our tomography technique is first validated in numerical examples and then experimentally demonstrated in custom-made tissue-mimicking phantoms with inclusions of varying size, echogenicity, and attenuation. We show that this technique is particularly good at resolving lateral variations in tissue attenuation and remains accurate in media with varying echogenicity.Significance.Based on a similar principle, this method can be easily combined with computed ultrasound tomography in echo mode (CUTE) for speed-of-sound imaging, paving the way towards a multi-modal ultrasound tomography framework characterizing multiple acoustic tissue properties simultaneously.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics > Biomedical Photonics
08 Faculty of Science > Institute of Applied Physics

UniBE Contributor:

Korta Martiartu, Naiara, Salemi Yolgunlu, Parisa, Frenz, Martin, Jaeger, Michael

Subjects:

500 Science > 570 Life sciences; biology
600 Technology > 610 Medicine & health
600 Technology > 620 Engineering

ISSN:

0031-9155

Publisher:

Institute of Physics Publishing IOP

Language:

English

Submitter:

Pubmed Import

Date Deposited:

24 Apr 2024 15:44

Last Modified:

21 May 2024 00:15

Publisher DOI:

10.1088/1361-6560/ad41b2

PubMed ID:

38648803

Uncontrolled Keywords:

attenuation imaging inverse problems pulse-echo ultrasound tissue characterization ultrasound tomography

BORIS DOI:

10.48350/196192

URI:

https://boris.unibe.ch/id/eprint/196192

Actions (login required)

Edit item Edit item
Provide Feedback