We investigate the dependency of dynamic optical coherence tomography (DOCT) signal on wavelength and resolution in two systems. One is 840-nm spectral domain OCT, and the other is 1310-nm swept-source OCT. For wavelength dependency, we made the resolution roughly the same among two systems by computationally reducing the axial resolution of 840-nm system. For resolution dependency, we compared LIV images with and without reduction of the resolution. In addition, we performed numerical simulation by modeling the intracellular scatterer dynamics by a diffusion. Experiment and simulation suggested that LIV is highly affected by the wavelength, where shorter wavelength gives higher LIV.
|