title: A single transducer transaxial compression technique for the estimation of sound speed in biological tissues.
abstract: In this paper we report an extension to the TACT method for the estimation of sound speed with a single transducer to any depth. This method is based on the hypothesis that the displacement of the tissue caused by transaxial compression follows a theoretical function which we derive analytically. In this method, as in the original TACT, a transducer imparts an accurate transaxial compression to the tissue, and the corresponding change in the arrival time of an echo at a range of interest is measured. This procedure results in a biased speed estimate whose value is range dependent. The theoretical function is fitted to the experimental estimates, from which the unbiased sound speed is then computed.
authors.affiliation: Department of Radiology, University of Texas Medical School, Houston 77030.
authors.forename: J
authors.initials: J
authors.lastname: Ophir
authors.forename: T
authors.initials: T
authors.lastname: Moriya
authors.forename: Y
authors.initials: Y
authors.lastname: Yazdi
mesh_terms: D055592:Biophysical Phenomena; D001703:Biophysics; D008433:Mathematics; D008962:Models, Theoretical; D013016:Sound; D014159:Transducers; D014465:Ultrasonics