Table 1. A comparison of velocimetry techniques in OCT.

Technique	Correlation	Density	Components	PSF Calibration?	References
Doppler-OCT	temporal	dense	z	not needed	[3–5]
Multiangle-Doppler-OCT	temporal	dense	x, y, z, total speed	not needed	[6–8]
PTV-OCT	spatial	sparse	x, z	not needed	[9]
DPIV-OCT	spatial	intermediate	x, z	not needed	[10–13]
Speckle tracking	spatial	dense	x, z	not needed	[14]
DLS-OCT	temporal	dense	z, total speed, lateral speed	yes	[2]
Directional DLS-OCT	temporal	dense	x, z, total speed	estimated	[15,16]
OCT micro PIV	temporal	sparse	total speed	yes	[17]
PSV-OCT	spatial + temporal	sparse-intermediate	x, |y|, z, total speed	estimated	this work