In this paper, we present a computationally highly efficient full-wave model of optical coherence tomography (OCT)-scan formation by focused beams in spectral-domain OCT. Similarly to some previous models, it is based on the summation of fields scattered by discrete sub-resolution scatterers, and enables one to account for the axial and lateral inhomogeneity of the illuminating Gaussian beam. The main feature ensuring the high computational efficiency of the described model is that, rather than numerical integration of the scattered signal over the receiving aperture, we apply an analytical description of both the illuminating-beam focusing and the collection of the scattered signals over the receiving aperture. Elimination of numerical integration over the receiving aperture increases the overall computation speed by a factor of ##IMG## [http://ej.iop.org/images/1612-202X/17/11/115604/lplabac16ieqn1.gif] {$^{}$} ∼ ##IMG## [http...] {${10^3}$}

中文翻译：

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聚焦光束形成OCT扫描的高效计算模型及其在证明OCT血管造影新原理方面的用途

在本文中，我们提出了一种在光谱域OCT中由聚焦光束形成的光学相干层析成像（OCT）扫描形成的高效计算全波模型。与某些以前的模型类似，它基于离散的子分辨率散射体散射的场的总和，并且使人们能够解释照明高斯光束的轴向和横向不均匀性。确保所描述模型的高计算效率的主要特征是，我们对接收光束上的照明光束聚焦和散射信号的收集进行了分析性描述，而不是对接收孔径上的散射信号进行数值积分光圈。消除接收孔径上的数值积分可以使整体计算速度提高## IMG ## [http：