We developed an SD-OCT (Spectral Domain-Optical Coherence Tomography) system which uses a GPU (Graphics Processing Unit) for processing. The image size from the SD-OCT system is 1024 × 512 and the speed is 110 frame/sec in real-time. K-domain linearization, FFT (Fast Fourier Transform), and log scaling were included in the GPU processing. The signal processing speed was about 62 ms using a CPU (Central Processing Unit) and 1.6 ms using a GPU, which is 39 times faster. We performed an in-vivo retinal scan, and reconstructed a 3D visualization based on C-scan images. As a result, there were minimal motion artifacts and we confirmed that tomograms of blood vessels, the optic nerve, and the optic disk are clearly identified. According to the results of this study, this SD-OCT can be applied to real-time 3D display technology, particularly auxiliary instruments for eye operations in ophthalmology.
© 2013 Optical Society of Korea
(060.2310) Fiber optics and optical communications : Fiber optics
(110.2350) Imaging systems : Fiber optics imaging
(170.4470) Medical optics and biotechnology : Ophthalmology
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(300.6190) Spectroscopy : Spectrometers
Original Manuscript: November 1, 2012
Revised Manuscript: December 24, 2012
Manuscript Accepted: January 28, 2013
Published: February 25, 2013
Nam Hyun Cho, Unsang Jung, Suhwan Kim, Woonggyu Jung, Junghwan Oh, Hyun Wook Kang, and Jeehyun Kim, "High Speed SD-OCT System Using GPU Accelerated Mode for in vivo Human Eye Imaging," J. Opt. Soc. Korea 17, 68-72 (2013)
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