23 July 2003 Flow velocity profile measurement of scattering liquid using Doppler optical coherence tomography
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Abstract
The aim of this study was to measure the velocity and velocity profile of 0.3% Intralipid mixture in a 1.5-mm thick glass capillary using Doppler Optical Coherence Tomography (DOCT). First, while still empty, the dimensions of the capillary were measured. The outer diameter was 1.50 mm ± 0.01 mm while the lumen diameter was 1.01 ± 0.01 mm. Then, having filled the capillary with 0.3% solution, the lumen diameter was measured again. The mean refractive index of the solution was calculated and turned out to be 1.36 ± 0.01 mm. During the next stage, flow measurements were performed at an angle of 88° between the illuminating beam and the velocity vector of the fluid. The velocity profile, based on a set of 10 measurements, was calculated from the DOCT signal using a discrete Fourier transform in 32 sections of the capillary. The maximum velocity, located in the middle part of the capillary, was 0.256 ± 0.035 m/s. The results show that the flow velocity profile of 0.3% Intralipid solution can be obtained from a glass capillary.
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Jukka T. Hast, Jukka T. Hast, Tuukka Prykari, Tuukka Prykari, Erkki Alarousu, Erkki Alarousu, Risto A. Myllyla, Risto A. Myllyla, Alexander V. Priezzhev, Alexander V. Priezzhev, } "Flow velocity profile measurement of scattering liquid using Doppler optical coherence tomography", Proc. SPIE 4965, Optical Diagnostics and Sensing in Biomedicine III, (23 July 2003); doi: 10.1117/12.479272; https://doi.org/10.1117/12.479272
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