Rapid high resolution imaging with a dual-channel scanning technique
Rapid high resolution imaging with a dual-channel scanning technique
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DOI：
10.1364/ol.41.001881
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发表时间：
2016-04-15
期刊：
影响因子：
3.6
通讯作者：
Burns, Stephen A.
中科院分区：
文献类型：
--
作者：
de Castro, Alberto;Huang, Gang;Burns, Stephen A.
双光束光栅扫描成像系统中的通道之间的空间移位引入了来自两个通道的图像之间的时间间隔，该时间间隔可以比系统的帧速率短得多。该技术通过测量视网膜毛细血管中红细胞的速度来证明。我们使用了自适应光学扫描激光检眼镜，并引入了4.7毫秒的成像通道之间的时间间隔。我们成像三个主题，并测量在脉搏率变化的毛细血管血流速度。由于通道间的时移是容易和连续可调的，该方法可用于测量任何光栅扫描系统中的快速变化的事件，几乎没有增加复杂性。(C)2016美国光学学会
A spatial shift between channels in a dual-beam raster-scan imaging system introduces a temporal separation between images from the two channels that can be much shorter than the frame rate of the system. The technique is demonstrated by measuring the velocity of erythrocytes in the retinal capillaries. We used an adaptive optics scanning laser ophthalmoscope and introduced a temporal separation between imaging channels of 4.7 ms. We imaged three subjects and measured changing capillary blood flow velocity at the pulse rate. Since the time shift between channels is easily and continuously adjustable, this method can be used to measure rapidly changing events in any raster scan system with little added complexity. (C) 2016 Optical Society of America