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Proceedings Paper

Strain rate imaging of sinoatrial node by ultrasound
Author(s): Deyu Li; Shukui Zhao; Lixue Yin; Tianfu Wang; Changqiong Zheng; Yi Zheng
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Paper Abstract

Sinoatrial node plays an important role in cardiac conduction system because it initiates the cardiac electrical activation, and sets the rate and rhythm of the heart. A method based on ultrasound strain rate imaging is proposed in this paper to reflect the local compression and expansion rates not affected by overall heart translation, or regional deformation during the cardiac cycle under real physiological conditions. In this method, tissue Doppler motion information was first derived from Doppler tissue velocity images, and then the quantitative velocity values was mapped according to the color bar in the images. Strain rate was estimated from the velocity value according to the relation between velocity gradient and strain rate. Preliminary result of color-coded strain rate images of the sinoatrial node of a dog is given. Result shows a variable pattern in different cardiac phase within a cardiac cycle. Further study of the method may provide a new non-invasive way to observe and characterize sinoatrial node.

Paper Details

Date Published: 18 September 2001
PDF: 5 pages
Proc. SPIE 4549, Medical Image Acquisition and Processing, (18 September 2001); doi: 10.1117/12.440268
Show Author Affiliations
Deyu Li, Sichuan Univ. (China)
Shukui Zhao, Sichuan Univ. (China)
Lixue Yin, Sichuan Provincial Hospital (China)
Tianfu Wang, Sichuan Univ. (China)
Changqiong Zheng, Sichuan Univ. (China)
Yi Zheng, St. Cloud State Univ. (United States)


Published in SPIE Proceedings Vol. 4549:
Medical Image Acquisition and Processing

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