In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 83, No. S1 ( 1988-05-01), p. S110-S110
Abstract:
A pilot study examining canine aorta investigated the ultrasonic propagation properties as a function of location and orientation along the aorta. Longitudinal, circumferential, intimal, and adventitial sections of canine aorta were taken at seven locations along the aorta from the aortic arch to the iliac bifurcation. Aortic media consists of circumferentially oriented elastin fibers interspersed with a randomly oriented network of fibrils. Over the distance from the heart to the abdomen, the elastin concentration decreases as the collagen concentration increases. The speed is shown to be statistically significant with respect to location and correlates strongly with orientation. The 28 speed values ranged from 1610–1859 m/s with the average being 1662 m/s. On the other hand, the attenuation coefficient is not shown to be statistically significant with respect to orientation but does correlate strongly with respect to location. The 27 attenuation coefficient values ranged from 48.5–131.8 dB/mm with an average of 91.2 dB/mm. [This work was supported by NIH Grants AM21557, CA36029, and AR36794 and Rehabilitation Research and Development Services of the Veterans Administration.]
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
1988
detail.hit.zdb_id:
1461063-2
detail.hit.zdb_id:
219231-7
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