Real-time inverse scattering for optical coherence tomography

Tyler S. Ralston; Daniel L. Marks; P. Scott Carney; Stephen A. Boppart M.D.

doi:10.1117/12.699285

15 February 2007 Real-time inverse scattering for optical coherence tomography

Tyler S. Ralston, Daniel L. Marks, P. Scott Carney, Stephen A. Boppart M.D.

Proceedings Volume 6446, Biomedical Applications of Light Scattering; 644608 (2007) https://doi.org/10.1117/12.699285
Event: SPIE BiOS, 2007, San Jose, California, United States

Abstract

We have developed and implemented a system which can acquire, process, and display the inverse scattering solution for optical coherence tomography (OCT) in real-time at frame rates of 2.25 fps for 512 X 1024 images. Frames which previously required 60 s, now take under 500 ms, an improvement in processing speed by a factor of over 120 times. An efficient routine was designed which requires two interpolations of the columns, one one-dimensional real-to-complex fast Fourier transform (FFT) of the columns, and two two-dimensional FFTs. The limits to speed are now reliant on the parallelizability of the processing hardware. Our system provides quantitatively meaningful structural information from previously indistinguishable scattering intensities and provides proof of feasibility for future real-time systems.

Citation Download Citation

Tyler S. Ralston, Daniel L. Marks, P. Scott Carney, and Stephen A. Boppart M.D. "Real-time inverse scattering for optical coherence tomography", Proc. SPIE 6446, Biomedical Applications of Light Scattering, 644608 (15 February 2007); https://doi.org/10.1117/12.699285

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