Research Papers: Imaging

In vivo functional imaging of blood flow and wall strain rate in outflow tract of embryonic chick heart using ultrafast spectral domain optical coherence tomography

[+] Author Affiliations
Peng Li, Ruikang K. Wang

University of Washington, Department of Bioengineering, Seattle, Washington 98195

Xin Yin, Liang Shi, Sandra Rugonyi

Oregon Health & Science University, Department of Biomedical Engineering, Portland, Oregon 97239

J. Biomed. Opt. 17(9), 096006 (Sep 06, 2012). doi:10.1117/1.JBO.17.9.096006
History: Received June 19, 2012; Revised August 6, 2012; Accepted August 8, 2012
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Abstract.  During cardiac development, the cardiac wall and flowing blood are two important cardiac tissues that constantly interact with each other. This dynamic interaction defines appropriate biomechanical environment to which the embryonic heart is exposed. Quantitative assessment of the dynamic parameters of wall tissues and blood flow is required to further our understanding of cardiac development. We report the use of an ultrafast 1310-nm dual-camera spectral domain optical coherence tomography (SDOCT) system to characterize/image, in parallel, the dynamic radial strain rate of the myocardial wall and the Doppler velocity of the underlying flowing blood within an in vivo beating chick embryo. The OCT system operates at 184-kHz line scan rate, providing the flexibility of imaging the fast blood flow and the slow tissue deformation within one scan. The ability to simultaneously characterize tissue motion and blood flow provides a useful approach to better understand cardiac dynamics during early developmental stages.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Peng Li ; Xin Yin ; Liang Shi ; Sandra Rugonyi and Ruikang K. Wang
"In vivo functional imaging of blood flow and wall strain rate in outflow tract of embryonic chick heart using ultrafast spectral domain optical coherence tomography", J. Biomed. Opt. 17(9), 096006 (Sep 06, 2012). ; http://dx.doi.org/10.1117/1.JBO.17.9.096006


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