TY - JOUR
T1 - Bidirectional Doppler Fourier-domain optical coherence tomography for measurement of absolute flow velocities in human retinal vessels
AU - Werkmeister, René M.
AU - Dragostinoff, Nikolaus
AU - Pircher, Michael
AU - Götzinger, Erich
AU - Hitzenberger, Christoph K.
AU - Leitgeb, Rainer A.
AU - Schmetterer, Leopold
PY - 2008/12/15
Y1 - 2008/12/15
N2 - We describe a bidirectional color Doppler Fourier-domain optical coherence tomography system capable of measuring absolute velocities of moving scatterers by illuminating the sample with two linearly and orthogonally polarized beams, incident at a known angle on the sample. The velocity calculation is independent of the exact orientation of the velocity vector in the detection plane. First measurements were performed on a rotating disk driven at well-defined velocities and tilted by various small angles. Our results indicate a high correlation between preset and calculated velocities (correlation coefficient 0.999) and the independency of these velocities from the tilting angle of the disk. We demonstrate that bidirectional color Doppler optical coherence tomography allows for the measurement of absolute blood flow values in vivo in human retinal vessels.
AB - We describe a bidirectional color Doppler Fourier-domain optical coherence tomography system capable of measuring absolute velocities of moving scatterers by illuminating the sample with two linearly and orthogonally polarized beams, incident at a known angle on the sample. The velocity calculation is independent of the exact orientation of the velocity vector in the detection plane. First measurements were performed on a rotating disk driven at well-defined velocities and tilted by various small angles. Our results indicate a high correlation between preset and calculated velocities (correlation coefficient 0.999) and the independency of these velocities from the tilting angle of the disk. We demonstrate that bidirectional color Doppler optical coherence tomography allows for the measurement of absolute blood flow values in vivo in human retinal vessels.
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U2 - 10.1364/OL.33.002967
DO - 10.1364/OL.33.002967
M3 - Article
C2 - 19079508
AN - SCOPUS:58149105909
SN - 0146-9592
VL - 33
SP - 2967
EP - 2969
JO - Optics Letters
JF - Optics Letters
IS - 24
ER -