Journal of the Korean Society for Nondestructive Testing (비파괴검사학회지)

The Korean Society for Nondestructive Testing (한국비파괴검사학회)
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Development of Dual Beam High Speed Doppler OFDI

  • Kim, SunHee (Korea Railroad Research Institute) ;
  • Park, TaeJin (Department of Mechanical Engineering, Korea Advance Institute of Science and Technology) ;
  • Oh, Wang-Yuhl (Department of Mechanical Engineering, Korea Advance Institute of Science and Technology)
  • Received : 2013.06.13
  • Accepted : 2013.06.25
  • Published : 2013.06.30
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Abstract

This paper describes development of a high speed Doppler OFDI system for non-invasive vascular imaging. Doppler OFDI (optical frequency domain imaging) is one of the phase-resolved second generation OCT (optical coherence tomography) techniques for high resolution imaging of moving elements in biological tissues. To achieve a phase-resolved imaging, two temporally separated measurements are required. In a conventional Doppler OCT, a pair of massively oversampled successive A-lines is used to minimize de-correlation noise at the expense of significant imaging speed reduction. To minimize a de-correlation noise between targeted two measurements without suffering from significant imaging speed reduction, several methods have been developed such as an optimized scanning pattern and polarization multiplexed dual beam scanning. This research represent novel imaging technique using frequency multiplexed dual beam illumination to measure exactly same position with aimed time interval. Developed system has been verified using a tissue phantom and mouse vessel imaging.

Keywords

References

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