Doppler optical coherence tomography measurements in discretely swept optical frequency domain imaging
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説明
We describe preliminary results of high-speed 2-dimensional Doppler OCT measurement using a unique optical frequency domain imaging (OFDI) system. SSG-DBR laser is the light source from which wave number is swept discretely over predetermined absolute values in equal wave number interval with constant output intensity. Multi-sampling at each wave number enables us to reconstruct multiple images by 1 transversal scan, and the 2 dimensional flow image is reconstructed from the phase Doppler shift between 2 successive images. Maximum detectable velocity is restricted by sampling rate, which is higher than A-scan rate. 2 dimensional measurement of a phantom flow has been carried out with this system adopting Kasai velocity estimator. The results predict that the method is valid for stationary flow.
収録刊行物
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- SPIE Proceedings
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SPIE Proceedings 6847 68472G-, 2008-02-07
SPIE
