A Transaxial Compression Technique (TACT) for Localized Pulse-Echo Estimation of Sound Speed in Biological Tissues

J. Ophir; Y. Yazdi

doi:10.1177/016173469001200103

A Transaxial Compression Technique (TACT) for Localized Pulse-Echo Estimation of Sound Speed in Biological Tissues

J. Ophir, Y. Yazdi

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

We describe a new method for the estimation of the speed of sound in soft tissues in the pulse-echo mode. A transducer imparts an accurate transaxial compression to the tissue, and the corresponding change in the arrival time of an echo feature is measured. The ratio between the compressed depth and the difference in arrival time is taken as the estimate of the speed of sound. A second, noncompressing transducer is used to correct for distal tissue movement. We show theoretically and experimentally that accurate speed of sound estimations can be made in overlying and underlying tissue mimicking layers.

Original language	English (US)
Pages (from-to)	35-46
Number of pages	12
Journal	Ultrasonic Imaging
Volume	12
Issue number	1
DOIs	https://doi.org/10.1177/016173469001200103
State	Published - Jan 1990
Externally published	Yes

Keywords

Pulse echo
speed of sound
tissue characterization
tissue compression

ASJC Scopus subject areas

Radiological and Ultrasound Technology
Radiology Nuclear Medicine and imaging

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10.1177/016173469001200103

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title = "A Transaxial Compression Technique (TACT) for Localized Pulse-Echo Estimation of Sound Speed in Biological Tissues",

abstract = "We describe a new method for the estimation of the speed of sound in soft tissues in the pulse-echo mode. A transducer imparts an accurate transaxial compression to the tissue, and the corresponding change in the arrival time of an echo feature is measured. The ratio between the compressed depth and the difference in arrival time is taken as the estimate of the speed of sound. A second, noncompressing transducer is used to correct for distal tissue movement. We show theoretically and experimentally that accurate speed of sound estimations can be made in overlying and underlying tissue mimicking layers.",

keywords = "Pulse echo, speed of sound, tissue characterization, tissue compression",

author = "J. Ophir and Y. Yazdi",

note = "Funding Information: This research is supported in part by National Institutes of Health grants ROl-CA38515 and ROl-CA44389, and National ScienceF oundation grant INT 8813685. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

year = "1990",

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AU - Ophir, J.

AU - Yazdi, Y.

N1 - Funding Information: This research is supported in part by National Institutes of Health grants ROl-CA38515 and ROl-CA44389, and National ScienceF oundation grant INT 8813685. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 1990/1

Y1 - 1990/1

N2 - We describe a new method for the estimation of the speed of sound in soft tissues in the pulse-echo mode. A transducer imparts an accurate transaxial compression to the tissue, and the corresponding change in the arrival time of an echo feature is measured. The ratio between the compressed depth and the difference in arrival time is taken as the estimate of the speed of sound. A second, noncompressing transducer is used to correct for distal tissue movement. We show theoretically and experimentally that accurate speed of sound estimations can be made in overlying and underlying tissue mimicking layers.

AB - We describe a new method for the estimation of the speed of sound in soft tissues in the pulse-echo mode. A transducer imparts an accurate transaxial compression to the tissue, and the corresponding change in the arrival time of an echo feature is measured. The ratio between the compressed depth and the difference in arrival time is taken as the estimate of the speed of sound. A second, noncompressing transducer is used to correct for distal tissue movement. We show theoretically and experimentally that accurate speed of sound estimations can be made in overlying and underlying tissue mimicking layers.

KW - Pulse echo

KW - speed of sound

KW - tissue characterization

KW - tissue compression

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A Transaxial Compression Technique (TACT) for Localized Pulse-Echo Estimation of Sound Speed in Biological Tissues

Abstract

Keywords

ASJC Scopus subject areas

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