Real-time bulk motion insensitive flow segmentation algorithm for Doppler spectral optical coherence tomography

Maciej Szkulmowski; Anna Szkulmowska; Daniel Szlag; Ireneusz Grulkowski; Andrzej Kowalczyk; Maciej Wojtkowski

doi:10.1117/12.843107

22 February 2010 Real-time bulk motion insensitive flow segmentation algorithm for Doppler spectral optical coherence tomography

Maciej Szkulmowski, Anna Szkulmowska, Daniel Szlag, Ireneusz Grulkowski, Andrzej Kowalczyk, Maciej Wojtkowski

Author Affiliations +

Proceedings Volume 7554, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIV; 755414 (2010) https://doi.org/10.1117/12.843107
Event: SPIE BiOS, 2010, San Francisco, California, United States

Abstract

We present a simple and efficient numerical technique for segmentation retinal and choroidal blood vasculature with bulk motion correction in functional Doppler Spectral Optical Coherence Tomography (Doppler SOCT). The technique uses local variance of velocity tomogram which is higher in the areas of the tomogram with internal flow. The resulting variance map reveals the position of vessels. This can be used either for vessel segmentation purposes or for masking the vessels on velocity tomograms. The remaining velocity information is connected only with static structure velocity offset. As only Fourier transformations are used in calculations the algorithm removes the bulk motion from velocity tomograms and provides images of segmented vessels with speed of 80 000 lines/s. The algorithm is shown to work with velocity tomograms obtained by joint Spectral and Time domain OCT (STdOCT).

Citation Download Citation

Maciej Szkulmowski, Anna Szkulmowska, Daniel Szlag, Ireneusz Grulkowski, Andrzej Kowalczyk, and Maciej Wojtkowski "Real-time bulk motion insensitive flow segmentation algorithm for Doppler spectral optical coherence tomography", Proc. SPIE 7554, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIV, 755414 (22 February 2010); https://doi.org/10.1117/12.843107

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