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首页> 外文期刊>Optics Letters >Hybrid averaging offers high-flow contrast by cost apportionment among imaging time, axial, and lateral resolution in optical coherence tomography angiography
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Hybrid averaging offers high-flow contrast by cost apportionment among imaging time, axial, and lateral resolution in optical coherence tomography angiography

机译：混合平均通过光学相干断层扫描血管成像中的成像时间，轴向和横向分辨率之间的成本分摊提供高流量对比度

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The current temporal, wavelength, angular, and spatial averaging approaches trade imaging time and resolution for multiple independent measurements that improve the flow contrast in optical coherence tomography angiography (OCTA). We find that these averaging approaches are equivalent in principle, offering almost the same flow contrast enhancement as the number of averages increases. Based on this finding, we propose a hybrid averaging strategy for contrast enhancement by cost apportionment. We demonstrate that, compared with any individual approach, the hybrid averaging is able to offer a desired flow contrast without severe degradation of imaging time and resolution. Making use of the extended range of a VCSEL-based swept-source OCT, an angular averaging approach by path length encoding is also demonstrated for flow contrast enhancement. (C) 2016 Optical Society of America
机译：当前的时间，波长，角度和空间平均方法为多个独立的测量值交换了成像时间和分辨率，从而改善了光学相干断层扫描血管造影（OCTA）中的流动对比度。我们发现这些平均方法在原理上是等效的，随着平均数的增加，流对比度的增强几乎相同。基于此发现，我们提出了一种混合平均策略，可以通过成本分摊来增强对比度。我们证明，与任何单独的方法相比，混合平均能够提供所需的流对比度，而不会显着降低成像时间和分辨率。利用基于VCSEL的扫频源OCT的扩展范围，还证明了通过路径长度编码的角度平均方法可增强流对比度。 （C）2016美国眼镜学会

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