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Quantitative cerebral blood flow with Optical Coherence Tomography
Vivek J. Srinivasan, Sava Sakadžić, Iwona Gorczynska, Svetlana Ruvinskaya, Weicheng Wu, James G. Fujimoto, and David A. Boas »View Author Affiliations
1Photon Migration Imaging Laboratory, MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital/Harvard Medical School, Charlestown, MA 02129, USA
2Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
*Corresponding author: vjsriniv@nmr.mgh.harvard.edu
Optics Express, Vol. 18, Issue 3, pp. 2477-2494 (2010)
http://dx.doi.org/10.1364/OE.18.002477
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Abstract
Absolute measurements of cerebral blood flow (CBF) are an important endpoint in studies of cerebral pathophysiology. Currently no accepted method exists for in vivo longitudinal monitoring of CBF with high resolution in rats and mice. Using three-dimensional Doppler Optical Coherence Tomography and cranial window preparations, we present methods and algorithms for regional CBF measurements in the rat cortex. Towards this end, we develop and validate a quantitative statistical model to describe the effect of static tissue on velocity sensitivity. This model is used to design scanning protocols and algorithms for sensitive 3D flow measurements and angiography of the cortex. We also introduce a method of absolute flow calculation that does not require explicit knowledge of vessel angles. We show that OCT estimates of absolute CBF values in rats agree with prior measures by autoradiography, suggesting that Doppler OCT can perform absolute flow measurements in animal models.
© 2010 OSA
OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(170.1470) Medical optics and biotechnology : Blood or tissue constituent monitoring
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.5380) Medical optics and biotechnology : Physiology
ToC Category:
Medical Optics and Biotechnology
History
Original Manuscript: January 8, 2010
Revised Manuscript: January 12, 2010
Manuscript Accepted: January 15, 2010
Published: January 22, 2010
Virtual Issues
Vol. 5, Iss. 4 Virtual Journal for Biomedical Optics
Citation
Vivek J. Srinivasan, Sava Sakadžić, Iwona Gorczynska, Svetlana Ruvinskaya, Weicheng Wu, James G. Fujimoto, and David A. Boas, "Quantitative cerebral blood flow with Optical Coherence Tomography," Opt. Express 18, 2477-2494 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-3-2477
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References
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- H. Girouard and C. Iadecola, “Neurovascular coupling in the normal brain and in hypertension, stroke, and Alzheimer disease,” J. Appl. Physiol. 100(1), 328–335 (2006). [CrossRef]
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- W. D. Heiss, R. Graf, K. Wienhard, J. Löttgen, R. Saito, T. Fujita, G. Rosner, and R. Wagner, “Dynamic penumbra demonstrated by sequential multitracer PET after middle cerebral artery occlusion in cats,” J. Cereb. Blood Flow Metab. 14(6), 892–902 (1994). [CrossRef] [PubMed]
- W. D. Heiss, R. Graf, K. Wienhard, J. Löttgen, R. Saito, T. Fujita, G. Rosner, and R. Wagner, “Dynamic penumbra demonstrated by sequential multitracer PET after middle cerebral artery occlusion in cats,” J. Cereb. Blood Flow Metab. 14(6), 892–902 (1994). [CrossRef] [PubMed]
- D. Kleinfeld, P. P. Mitra, F. Helmchen, and W. Denk, “Fluctuations and stimulus-induced changes in blood flow observed in individual capillaries in layers 2 through 4 of rat neocortex,” Proc. Natl. Acad. Sci. U.S.A. 95(26), 15741–15746 (1998). [CrossRef] [PubMed]
- Y. Wang, B. A. Bower, J. A. Izatt, O. Tan, and D. Huang, “In vivo total retinal blood flow measurement by Fourier domain Doppler optical coherence tomography,” J. Biomed. Opt. 12(4), 041215 (2007). [CrossRef] [PubMed]
- R. K. K. Wang and S. Hurst, “Mapping of cerebro-vascular blood perfusion in mice with skin and skull intact by Optical Micro-AngioGraphy at 1.3 mum wavelength,” Opt. Express 15(18), 11402–11412 (2007). [CrossRef] [PubMed]
- R. K. Wang, S. L. Jacques, Z. Ma, S. Hurst, S. R. Hanson, and A. Gruber, “Three dimensional optical angiography,” Opt. Express 15(7), 4083–4097 (2007). [CrossRef] [PubMed]
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IEEE Trans. Sonics Ultrason.
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