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Realistic Phantoms for Diffuse Optical Imaging using Totally Absorbing Objects

机译:使用完全吸收物体的漫射光学成像的逼真的幻像

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We propose and validate the design of inhomogeneous phantoms for diffuse optical imaging purposes using totally absorbing objects embedded in a diffusive medium. From Monte Carlo simulations, we show that a given or desired perturbation strength caused by an realistic absorbing inhomogeneity of a certain absorption and volume can be approximately mimicked by a small totally absorbing object of a so-called Equivalent Black Volume (Equivalence Relation). This concept can be useful to design realistic inhomogeneous phantoms using a set of black objects with different volumes. Further, it permits to grade physiological or pathological changes on a reproducible scale of equivalent black volumes, thus facilitating the performance assessment of clinical instruments. We have also provided a plot to derive the Equivalent Black Volume yielding the same effect of a realistic absorption object.
机译:我们提出并验证了使用嵌入在扩散介质中的完全吸收物体来进行漫射光学成像目的的不均匀体模的设计。从蒙特卡洛模拟中,我们表明,由一定的吸收量和体积的实际吸收不均匀性引起的给定或期望的摄动强度,可以被所谓的等效黑体积(当量关系)的一个小的完全吸收对象近似地模拟。该概念对于使用一组具有不同体积的黑色物体设计逼真的不均匀幻像可能很有用。此外,它允许在等效黑体积的可再现规模上对生理或病理变化进行分级,从而有助于临床仪器的性能评估。我们还提供了一个图,以得出等效黑体积,产生与实际吸收对象相同的效果。

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