Ultrasonic assessment of tissue anisotropy

William D. O'Brien, John E. Olerud

Research output: Contribution to journalConference articlepeer-review


Two completely separate experiments using the Scanning Laser Acoustic Microscope, operating at an ultrasonic frequency of 100 MHz, assessed the attenuation coefficient and propagation speed of two anisotropic biological materials, viz., human Achilles tendon samples and bovine longissimus striated muscle samples. For the tendon samples, three separate locations were also evaluated (superior, medial and inferior). Anisotropy was evaluated by measuring the samples with the ultrasonic beam propagating either parallel or perpendicular to the tendon muscle fibers. Achilles tendons generally exhibited a greater anisotropy than did skeletal muscle, and for both materials, the parallel orientation of both attenuation coefficient and propagation speed were consistently greater that those of the perpendicular orientation.

Original languageEnglish (US)
Pages (from-to)1145-1148
Number of pages4
JournalProceedings of the IEEE Ultrasonics Symposium
StatePublished - 1995
EventProceedings of the 1995 IEEE Ultrasonics Symposium. Part 1 (of 2) - Seattle, WA, USA
Duration: Nov 7 1995Nov 10 1995

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


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