30 January 2012 Detailed software design of an ultra-parallel ultra-high speed SD-OCT for real-time 4D display at 12 volume/second
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Abstract
We report on the software design of an ultra-parallel ultra-high speed spectral domain optical coherence tomography (SD-OCT) system. In our system, optical de-multiplexers divide an interferogram into 320 light every 18.7 GHz frequency, instead of a refractive grating for spectroscopy so far used in conventional SD-OCT. These optical elements enable to get rid of a re-sampling process and contribute to reduce the load of computing. The fast Fourier transform (FFT) is performed by field-programmable gate array (FPGA) and real-time 3D OCT images are created on graphics processing unit (GPU). Our system achieves a real-time 3D OCT image display (4D display) with an A-scan, B-scan, and volume rate of 10 MHz, 4 kHz, and 12 volumes per second, respectively.
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H. Hiro-Oka, H. Hiro-Oka, D. Choi, D. Choi, K. Shimizu, K. Shimizu, K. Ohbayashi, K. Ohbayashi, "Detailed software design of an ultra-parallel ultra-high speed SD-OCT for real-time 4D display at 12 volume/second", Proc. SPIE 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI, 821339 (30 January 2012); doi: 10.1117/12.906948; https://doi.org/10.1117/12.906948
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