CAJ | 학술논문

为了提取生物组织的色散信息,提出了一种基于Fourier变换以及多项式拟合的方法.该方法通过对光学相干层析术的干涉包络进行Fourier变换,再将得到的相位谱进行多项式拟合以实现色散信息的提取.通过数值模拟及相关实验验证了该方法的可行性.本文的分析结果不但有助于实现动态的色散补偿,而且可以用于区分不同的生物组织,以及同一生物组织的不同生理状态.
위료제취생물조직적색산신식,제출료일충기우Fourier변환이급다항식의합적방법.해방법통과대광학상간층석술적간섭포락진행Fourier변환,재장득도적상위보진행다항식의합이실현색산신식적제취.통과수치모의급상관실험험증료해방법적가행성.본문적분석결과불단유조우실현동태적색산보상,이차가이용우구분불동적생물조직,이급동일생물조직적불동생리상태.
The dispersion signal in optical coherence tomography (OCT) carries the information about the structure and function of bio-tissues. In order to extract the information about the dispersion, a method based on the Fourier transform and the polynomial fit was presented. The interferogram envelope in OCT was Fourier transformed to the frequency domain,and then the second order dispersion information was obtained by performing a polynomial fit to the phase spectrum. Theoretical simulation and experimental data validated the method. The obtained results in this work not only could be used for the dynamical dispersion compensation,but also provide a way to characterize different tissues,and different physiological conditions.