Angle-insensitive flow measurement using Doppler bandwidth
نویسندگان
چکیده
منابع مشابه
Tissue blood flow measurement by laser Doppler technique
Measurement of blood flow and the effects of different factors on tissue blood flow are important fields of research in physiology and pharmacology. So far, different methods have been innovated, using laser light is the Last one. In this article history, principles and specifications of laser technique along with its advantages and disadvantages ( in comparison with other methods) are revie...
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In this paper a novel technique for flow measurement which is based on the photoacoustic (PA) Doppler effect is described. A significant feature of the proposed approach is that it can be implemented using tone burst optical excitation thus enabling simultaneous measurement of both velocity and position. The technique, which is based on external modulation and heterodyne detection, was experime...
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Citation: Tan O, Konduru R, Zhang X, Sadda SR, Huang D. Dual-angle protocol for Doppler optical coherence tomography to improve retinal blood flow measurement. Tran Vis Sci Tech. 2014;3(4):6, http:// tvstjournal.org/doi/full/10.1167/tvst. 3.4.6, doi:10.1167/tvst.3.4.6 Purpose: To compare the performance of two different multiple-scan protocols for total retinal blood flow (TRBF) measurement usi...
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BACKGROUND AND PURPOSE The angle of insonation cannot be assessed with conventional transcranial Doppler sonography. Findings in healthy control subjects suggest that the angle is relatively small in routine clinical practice. Data regarding the angle in middle cerebral artery (MCA) stenosis are scarce. In this study, the angle and its effect on flow velocity measurements were assessed with tra...
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We propose a new method to measure transverse flow velocity based on photoacoustic Doppler bandwidth broadening, which is determined by the geometry of the probe-beam and the velocity of the transverse flow. By exploiting pulsed laser excitation and raster motor scanning, three-dimensional structure and flow velocity can be imaged simultaneously. In addition, the flow direction can be determine...
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ژورنال
عنوان ژورنال: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
سال: 1998
ISSN: 0885-3010
DOI: 10.1109/58.677602