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Sensors 2014, 14(2), 2171-2181; doi:10.3390/s140202171
Article

Development of Real-Time Dual-Display Handheld and Bench-Top Hybrid-Mode SD-OCTs

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Received: 29 November 2013 / Revised: 13 January 2014 / Accepted: 21 January 2014 / Published: 27 January 2014
(This article belongs to the Section Physical Sensors)
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Abstract

Development of a dual-display handheld optical coherence tomography (OCT) system for retina and optic-nerve-head diagnosis beyond the volunteer motion constraints is reported. The developed system is portable and easily movable, containing the compact portable OCT system that includes the handheld probe and computer. Eye posterior chambers were diagnosed using the handheld probe, and the probe could be fixed to the bench-top cradle depending on the volunteers’ physical condition. The images obtained using this handheld probe were displayed in real time on the computer monitor and on a small secondary built-in monitor; the displayed images were saved using the handheld probe’s built-in button. Large-scale signal-processing procedures such as k-domain linearization, fast Fourier transform (FFT), and log-scaling signal processing can be rapidly applied using graphics-processing-unit (GPU) accelerated processing rather than central-processing-unit (CPU) processing. The Labview-based system resolution is 1,024 × 512 pixels, and the frame rate is 56 frames/s, useful for real-time display. The 3D images of the posterior chambers including the retina, optic-nerve head, blood vessels, and optic nerve were composed using real-time displayed images with 500 × 500 × 500 pixel resolution. A handheld and bench-top hybrid mode with a dual-display handheld OCT was developed to overcome the drawbacks of the conventional method.
Keywords: OCT; handheld probe; GPU; real time; dual display OCT; handheld probe; GPU; real time; dual display
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Cho, N.H.; Park, K.; Wijesinghe, R.E.; Shin, Y.S.; Jung, W.; Kim, J. Development of Real-Time Dual-Display Handheld and Bench-Top Hybrid-Mode SD-OCTs. Sensors 2014, 14, 2171-2181.

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