Towards clinical computed ultrasound tomography in echo-mode: Dynamic range artefact reduction

Jaeger, Michael; Frenz, Martin (2015). Towards clinical computed ultrasound tomography in echo-mode: Dynamic range artefact reduction. Ultrasonics, 62, pp. 299-304. Elsevier 10.1016/j.ultras.2015.06.003

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Computed ultrasound tomography in echo-mode (CUTE) allows imaging the speed of sound inside tissue using hand-held pulse-echo ultrasound. This technique is based on measuring the changing local phase of beamformed echoes when changing the transmit beam steering angle. Phantom results have shown a spatial resolution and contrast that could qualify CUTE as a promising novel diagnostic modality in combination with B-mode ultrasound. Unfortunately, the large intensity range of several tens of dB that is encountered in clinical images poses difficulties to echo phase tracking and results in severe artefacts. In this paper we propose a modification to the original technique by which more robust echo tracking can be achieved, and we demonstrate in phantom experiments that dynamic range artefacts are largely eliminated. Dynamic range artefact reduction also allowed for the first time a clinical implementation of CUTE with sufficient contrast to reproducibly distinguish the different speed of sound in different tissue layers of the abdominal wall and the neck.

Item Type:

Journal Article (Original Article)

Division/Institute:

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

UniBE Contributor:

Jaeger, Michael and Frenz, Martin

Subjects:

500 Science
500 Science > 530 Physics
600 Technology > 620 Engineering

ISSN:

0041-624X

Publisher:

Elsevier

Language:

English

Submitter:

Martin Frenz-Lips

Date Deposited:

04 Feb 2016 10:53

Last Modified:

04 Feb 2016 10:53

Publisher DOI:

10.1016/j.ultras.2015.06.003

BORIS DOI:

10.7892/boris.74991

URI:

https://boris.unibe.ch/id/eprint/74991

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