DSP-based data acquisition and processing system for OCT

Gang Li; Wei Shao; Kaijie Wu; Ling Lin

doi:10.1117/12.482930

12 September 2002 DSP-based data acquisition and processing system for OCT

Gang Li, Wei Shao, Kaijie Wu, Ling Lin

Proceedings Volume 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment; (2002) https://doi.org/10.1117/12.482930
Event: Photonics Asia, 2002, Shanghai, China

Abstract

Optical Coherence Tomography (OCT) is a novel optical imaging technology that provides high-resolution cross-sectional views of subsurface microstructure of biological tissues. It features high sensitivity, noninvasiveness, high resolution of micron scale, probing depth of 2cm for transparent tissue and 1~2mm for highly scattering tissue, and etc. OCT has shown a promising future to become a complement to the conventional imaging techniques in the fields of medicine and biology. But there are still a number of problems should be solved before OCT technology can be applied to practical usage. One of those is the limited imaging speed. In this paper, a high-speed data acquisition and processing (DAP) system for OCT is presented. Built around the high-powered Digital signal Processor (DSP) TMS32OVC5410A, the system is designed to cooperate with a PC to realize the image-scanning control, signal acquisition, data processing, transmission, image reconstruction and display. Superior to conventional data acquisition systems (DAQs), this system implants pre-processing of raw data into DSP, thus reduces the image acquisition time by carrying out the large amount of computation in the DSP, rather than in the PC. In addition, it can present two images with different information at per 2-D scans. And the system can be extended to future diverse applications by loading flexible digital signal processing schemes.

Citation Download Citation

Gang Li, Wei Shao, Kaijie Wu, and Ling Lin "DSP-based data acquisition and processing system for OCT", Proc. SPIE 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment, (12 September 2002); https://doi.org/10.1117/12.482930

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KEYWORDS

Digital signal processing

Optical coherence tomography

Data acquisition

Signal processing

Imaging systems

Tissues

Data processing

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