Temperature dependence of speed of sound and attenuation of porcine left ventricular myocardium

Krisztián Füzesi; Natalia Ilyina; Erik Verboven; Koen Van Den Abeele; Miklós Gyöngy; Jan D'hooge

doi:10.1016/j.ultras.2017.09.003

Temperature dependence of speed of sound and attenuation of porcine left ventricular myocardium

Ultrasonics. 2018 Jan:82:246-251. doi: 10.1016/j.ultras.2017.09.003. Epub 2017 Sep 6.

Authors

Krisztián Füzesi¹, Natalia Ilyina², Erik Verboven³, Koen Van Den Abeele³, Miklós Gyöngy⁴, Jan D'hooge²

Affiliations

¹ Cardiovascular Imaging and Dynamics, Department of Cardiovascular Sciences, Faculty of Medicine, University of Leuven, Leuven, Belgium; Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary. Electronic address: [email protected].
² Cardiovascular Imaging and Dynamics, Department of Cardiovascular Sciences, Faculty of Medicine, University of Leuven, Leuven, Belgium.
³ Wave Propagation and Signal Processing, Department of Physics and Astronomy, Faculty of Science, University of Leuven, Campus Kulak, Kortrijk, Belgium.
⁴ Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary.

PMID: 28917983
DOI: 10.1016/j.ultras.2017.09.003

Abstract

The temperature dependence of soft tissue acoustic properties is relevant for monitoring tissue hyperthermia. In the current work, the propagation speed and attenuation of healthy porcine left ventricular myocardium (N=5) was investigated in a frequency range relevant for clinical diagnostic imaging, i.e. 2.5-13.0MHz. Each tissue sample was held in a water bath at a temperature T=25°C, heated to 45°C, and allowed to cool back down to 25°C. Due to initial tissue swelling, the data for decreasing temperatures was considered more reliable. In this case, the slope of the phase velocity versus temperature relation was measured to be 1.10±0.04m/s/°C, and the slope of the attenuation was -0.11±0.04dB/cm/°C at 10MHz, or -0.0041±0.0015dB/cm/MHz^1.4336/°C as a function of frequency.

Keywords: Phase velocity; Porcine myocardium; Temperature dependency; Tissue characterization.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Acoustics*
Animals
Models, Biological
Myocardium*
Swine
Temperature*