Real-time display on SD-OCT using a linear-in-wavenumber spectrometer and a graphics processing unit

Yuuki Watanabe; Toshiki Itagaki

doi:10.1117/12.840128

22 February 2010 Real-time display on SD-OCT using a linear-in-wavenumber spectrometer and a graphics processing unit

Yuuki Watanabe, Toshiki Itagaki

Proceedings Volume 7554, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIV; 75542S (2010) https://doi.org/10.1117/12.840128
Event: SPIE BiOS, 2010, San Francisco, California, United States

Abstract

We demonstrated a real-time display of processed OCT images using a linear-in-wavenumber (linear-k) spectrometer and a graphics processing unit (GPU). We used the linear-k spectrometer with optimal combination of a diffractive grating with 1200 lines/mm and a F2 equilateral prism in the 840 nm spectral region, to avoid calculating the re-sampling process. The calculations of the FFT (fast Fourier transform) were accelerated by the low cost GPU with many stream processors, which realized highly parallel processing. A display rate of 27.9 frames per second for processed images (2048 FFT size × 1000 lateral A-scans) was achieved in our OCT system using a line scan CCD camera operated at 27.9 kHz.

Citation Download Citation

Yuuki Watanabe and Toshiki Itagaki "Real-time display on SD-OCT using a linear-in-wavenumber spectrometer and a graphics processing unit", Proc. SPIE 7554, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIV, 75542S (22 February 2010); https://doi.org/10.1117/12.840128

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