High-speed linear detection time domain optical coherence tomography with reflective grating-generated spatial reference delay.
High-speed linear detection time domain optical coherence tomography with reflective grating-generated spatial reference delay.
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DOI：
10.1364/ao.48.003401
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发表时间：
2009-06
期刊：
影响因子：
1.9
通讯作者：
Y. Watanabe;Fumitoshi Sajima;Toshiki Itagaki;Kei Watanabe;Yu Shuto
中科院分区：
文献类型：
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作者：
Y. Watanabe;Fumitoshi Sajima;Toshiki Itagaki;Kei Watanabe;Yu Shuto
我们开发了一种高速线性检测时域光学相干断层扫描（OCT）技术，该技术在探针束扫描期间使用线扫描相机检测参考臂中反射光栅产生的空间光延迟。使用以47,000行/s速度工作的InGaAs线扫描相机（512像素），两条连续线之间差的绝对值的计算可以近似地显示为以94帧/s速度具有500个横向像素的横截面图像。数据采集后，我们进行了涉及希尔伯特变换的后处理，以提高OCT图像的图像质量。我们的OCT系统成功地用于人体手指的活体成像，灵敏度为93 dB。
We developed a high-speed linear detection time-domain optical coherence tomography (OCT) technique that detected a reflective grating-generated spatial optical delay in the reference arm using a line scan camera during probe-beam scanning. Using an InGaAs line scan camera (512 pixels) operating at 47,000 lines/s, the calculation of the absolute value of the difference between two sequential lines can be approximately displayed as cross-sectional images with 500 lateral pixels at 94 frames/s . After data acquisition, we performed postprocessing that involves a Hilbert transform to improve the image quality of an OCT image. Our OCT system was successfully used to image a human finger in vivo with 93 dB sensitivity.