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Speed of 10 MHz sound in canine aortic wall: Effects of temperature, storage and formalin soaking

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Abstract

The speed of 10 MHz sound in excised canine thoracic aortic wall was measured over a temperature range from 23°C to 37°C. The effect of storage (for 24h) in Ringer's lactate solution upon the speed of sound was investigated. The effect of soaking in 10% formalin solution was also investigated. At 37°C, the speed of 10 MHz sound was 1·59 mm μs−1 in fresh samples. There was negligible difference between the speed of sound in fresh and 24h samples at 37°C. The temperature dependence of the speed of sound in aortic wall was slight. The effect of formalin soaking was to decrease the speed of sound very slightly at temperatures approaching 37°C, raising questions as to the validity of a model formalin stiffening for evaluation of the ultrasonic tissue signature in aortic wall.

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References

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Authors and Affiliations

  1. Biomedical Engineering Centre, Purdue University, 47907, West Lafayette, Indiana, USA

    David J. Hughes & Brian Snyder

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  1. David J. Hughes
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  2. Brian Snyder
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Hughes, D.J., Snyder, B. Speed of 10 MHz sound in canine aortic wall: Effects of temperature, storage and formalin soaking. Med. Biol. Eng. Comput. 18, 220–222 (1980). https://doi.org/10.1007/BF02443298

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  • DOI: https://doi.org/10.1007/BF02443298

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