Flow velocity profile measurement of scattering liquid using Doppler optical coherence tomography

Jukka Hast*, Tuukka Prykäri, Erkki Alarousu, Risto Myllylä, Alexander Priezzhev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

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 ± 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. 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.

Original languageEnglish (US)
Pages (from-to)66-72
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4965
DOIs
StatePublished - 2003
Externally publishedYes

Keywords

  • Doppler optical coherence tomography
  • Flow velocity profile
  • Intralipid

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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