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Journal of Biomedical Optics • Open Access

Graphics processing unit accelerated intensity-based optical coherence tomography angiography using differential frames with real-time motion correction
Author(s): Yuuki Watanabe; Yuhei Takahashi; Hiroshi Numazawa

Paper Abstract

We demonstrate intensity-based optical coherence tomography (OCT) angiography using the squared difference of two sequential frames with bulk-tissue-motion (BTM) correction. This motion correction was performed by minimization of the sum of the pixel values using axial- and lateral-pixel–shifted structural OCT images. We extract the BTM-corrected image from a total of 25 calculated OCT angiographic images. Image processing was accelerated by a graphics processing unit (GPU) with many stream processors to optimize the parallel processing procedure. The GPU processing rate was faster than that of a line scan camera (46.9 kHz). Our OCT system provides the means of displaying structural OCT images and BTM-corrected OCT angiographic images in real time.

Paper Details

Date Published: 11 July 2013
PDF: 7 pages
J. Biomed. Opt. 19(2) 021105 doi: 10.1117/1.JBO.19.2.021105
Published in: Journal of Biomedical Optics Volume 19, Issue 2
Show Author Affiliations
Yuuki Watanabe, Yamagata Univ. (Japan)
Yuhei Takahashi, Yamagata Univ. (Japan)
Hiroshi Numazawa, Yamagata Univ. (Japan)


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