In X‐ray imaging, anti‐scatter grids are used to reduce scatter radiation reaching image receptors, hence improving image quality. Optimization of grid performance is essential for improving image diagnostic quality and minimizing radiation doses to patients. This work investigated the performance of a series of grid designs modeled from the design of typically focused grid with grid ratio 8:1 (r8) and strip height 1.7 mm (h1.7) for high‐energy radiographic applications. Monte Carlo simulation was used to evaluate designs (r8h1.7) which had the strip thickness changed from 6 to 150 μm in 2 μm increments and the interspace distance fixed at 214 μm. The transmissions of radiation in grid materials were modeled by using a regression with radial‐basis‐function‐networks (RBFNS). KSNR was then determined from RBFNS models of radiation transmissions. The optimal strip‐thickness was obtained at the maximum signal‐to‐noise ratio (SNR) improvement factor (KSNR). For high‐energy applications at 100 peak‐kilo‐voltage (kVp) and 30 cm PMMA thickness, the optimal lead‐strip‐thickness was found approximately 74 μm resulting in a strip‐frequency approximately 35 per cm (N35). Using the optimal thickness for imaging condition at 100 kVp and 30 cm thickness, the KSNR would increase by approximately 5.3%. This work showed the existence of optimal strip‐thickness for a series of grids with a given grid‐ratio, strip‐height, strip‐, and interspace materials. The findings are useful and provide guidance to improve grid designs for better performance that will essentially lead to better image quality and better radiation protection for patients.

中文翻译：

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对于给定的网格比和条带高度，确定抗散射网格的最佳条带厚度

在 X 射线成像中，抗散射网格用于减少到达图像接收器的散射辐射，从而提高图像质量。网格性能的优化对于提高图像诊断质量和最大限度地减少患者的辐射剂量至关重要。这项工作调查了一系列网格设计的性能，这些网格设计是从典型聚焦网格的设计中建模的，网格比为 8:1 (r8)，条带高度为 1.7 mm (h1.7)，用于高能射线照相应用。Monte Carlo 模拟用于评估设计 (r8h1.7)，其中带钢厚度以 2 μm 为增量从 6 μm 变为 150 μm，间距固定为 214 μm。通过使用径向基函数网络（RBFNS）的回归对网格材料中的辐射传输进行建模。然后根据辐射传输的 RBFNS 模型确定 KSNR。在最大信噪比 (SNR) 改进因子 (KSNR) 下获得最佳条带厚度。对于 100 峰值千电压 (kVp) 和 30 cm PMMA 厚度的高能应用，发现最佳引线带厚度约为 74 μm，导致带频率约为 35/cm (N35)。在 100 kVp 和 30 cm 厚度下使用成像条件的最佳厚度，KSNR 将增加约 5.3%。这项工作表明，对于具有给定网格比、条带高度、条带和间隙材料的一系列网格，存在最佳条带厚度。这些发现是有用的，并为改进网格设计以实现更好的性能提供了指导，这将从根本上为患者带来更好的图像质量和更好的辐射防护。