Retinal blood flow analysis using joint spectral and time domain optical coherence tomography

Anna Szkulmowska; Maciej Szkulmowski; Tomasz Bajraszewski; Andrzej Kowalczyk; Maciej Wojtkowski

doi:10.1117/12.762725

11 February 2008 Retinal blood flow analysis using joint spectral and time domain optical coherence tomography

Anna Szkulmowska, Maciej Szkulmowski, Tomasz Bajraszewski, Andrzej Kowalczyk, Maciej Wojtkowski

Proceedings Volume 6844, Ophthalmic Technologies XVIII; 68440K (2008) https://doi.org/10.1117/12.762725
Event: SPIE BiOS, 2008, San Jose, California, United States

Abstract

We propose a new technique of measuring and analysis of OCT signals: joint Spectral and Time domain Optical Coherence Tomography (STdOCT). This technique is based on a multiple spectral interferogram registration in time increments. The analysis of a single spectral interferogram provides an axial structure of a sample. The analysis of signals registered in time enables velocity estimation of moving sample. The method is applied to biomedical imaging, in particular to in vivo measurements of retinal blood circulation. The velocity estimations obtained with joint STdOCT are compared with the ones obtained by known, phase-resolved OCT. In contrast to the phase-resolved technique, STdOCT correctly reproduces parabolic shape of the flow velocity distribution despite decreasing signal-to-noise ratio (SNR).

Citation Download Citation

Anna Szkulmowska, Maciej Szkulmowski, Tomasz Bajraszewski, Andrzej Kowalczyk, and Maciej Wojtkowski "Retinal blood flow analysis using joint spectral and time domain optical coherence tomography", Proc. SPIE 6844, Ophthalmic Technologies XVIII, 68440K (11 February 2008); https://doi.org/10.1117/12.762725

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