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Proceedings Paper

Real time 3D structural and Doppler OCT imaging on graphics processing units
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Paper Abstract

In this report the application of graphics processing unit (GPU) programming for real-time 3D Fourier domain Optical Coherence Tomography (FdOCT) imaging with implementation of Doppler algorithms for visualization of the flows in capillary vessels is presented. Generally, the time of the data processing of the FdOCT data on the main processor of the computer (CPU) constitute a main limitation for real-time imaging. Employing additional algorithms, such as Doppler OCT analysis, makes this processing even more time consuming. Lately developed GPUs, which offers a very high computational power, give a solution to this problem. Taking advantages of them for massively parallel data processing, allow for real-time imaging in FdOCT. The presented software for structural and Doppler OCT allow for the whole processing with visualization of 2D data consisting of 2000 A-scans generated from 2048 pixels spectra with frame rate about 120 fps. The 3D imaging in the same mode of the volume data build of 220 × 100 A-scans is performed at a rate of about 8 frames per second. In this paper a software architecture, organization of the threads and optimization applied is shown. For illustration the screen shots recorded during real time imaging of the phantom (homogeneous water solution of Intralipid in glass capillary) and the human eye in-vivo is presented.

Paper Details

Date Published: 20 March 2013
PDF: 8 pages
Proc. SPIE 8571, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII, 85710Y (20 March 2013); doi: 10.1117/12.2002511
Show Author Affiliations
Marcin Sylwestrzak, Nicolaus Copernicus Univ. (Poland)
Daniel Szlag, Nicolaus Copernicus Univ. (Poland)
Maciej Szkulmowski, Nicolaus Copernicus Univ. (Poland)
Iwona Gorczyńska, Nicolaus Copernicus Univ. (Poland)
Danuta Bukowska, Nicolaus Copernicus Univ. (Poland)
Maciej Wojtkowski, Nicolaus Copernicus Univ. (Poland)
Piotr Targowski, Nicolaus Copernicus Univ. (Poland)

Published in SPIE Proceedings Vol. 8571:
Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII
James G. Fujimoto; Joseph A. Izatt; Valery V. Tuchin, Editor(s)

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