High-speed (92 kHz) Fourier domain optical coherence tomography system in the 1 µm band with real-time data re-sampling
High-speed (92 kHz) Fourier domain optical coherence tomography system in the 1 µm band with real-time data re-sampling
复制标题
1 µm 波段高速 (92 kHz) 傅立叶域光学相干断层扫描系统，具有实时数据重采样功能
DOI：
10.1117/12.874741
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Bradu A
中科院分区：
文献类型：
--
作者：
Bradu A
傅立叶域光学相干断层扫描需要线性波数光谱仪或计算量大的软件算法来从波长到波数重新校准所获取的光学信号。第一种方法对光谱仪中棱镜的位置非常敏感，而第二种方法在串行定向的中央处理单元上实现时大大降低了系统速度。本文首次提出了一种工作在1 μm波段、具有实时数据再现功能的傅里叶域超快速光学相干层析成像系统。它采用了新发布的1024像素线扫描InGaAs相机，能够以每秒91，900行的速度采集数据。为了演示系统的性能，显示了通过实时处理和显示获得的志愿者拇指的图像。
Fourier domain optical coherence tomography requires either a linear-in-wavenumber spectrometer or a computationally heavy software algorithm to recalibrate the acquired optical signal from wavelength to wavenumber. The first method is very sensitive to the position of the prism incorporated in the spectrometer, while the second method drastically slows down the system speed when it is implemented on a serially oriented central processing unit. In this manuscript, a Fourier domain ultra-fast optical coherence tomography system operating in the 1 μm range with real-time data resampling is presented for the first time. It utilizes a newly released 1024 pixels line scan InGaAs camera able to acquire data as fast as 91,900 lines per second. To demonstrate the performance of the system, images from a thumb of a volunteer obtained with real-time processing and displaying are shown.