BM-mode scanning with parabolic phase modulation for full range Doppler optical tomography

Monitoring retinal vessel flow properties may aid the screening and the treatment of eye pathologies. We propose to extend the full range ability of the BM-mode scanning technique to high flow structures. The major difference of the proposed method resides in the utilization of a parabolic phase modulation in the reference arm along the B-scan direction. This enables to suppress artifacts generated by the mirror image removal of large velocity structures. We imaged the retina using 1ìm spectral-domain optical coherence tomography and show that this technique enables to have phase-resolved Doppler image where artifacts provoked by high flow vessels are removed. This improvement may help retinal blood flow imaging.