Optimal sampling lattices for high-fidelity CT reconstruction
Optimal sampling lattices for high-fidelity CT reconstruction
复制标题
高保真 CT 重建的最佳采样点阵
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Fang Xu
中科院分区：
文献类型：
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作者：
K. Mueller;Fang Xu
我们表明，熟悉的笛卡尔晶格虽然便于信号处理和表示，但在信号保真度方面并不是最优的。我们探索了最佳采样点阵的各种应用，例如用于 3D 计算机断层扫描 (CT) 重建的六角形和体心笛卡尔 (BCC) 点阵，无论是在 (2D) 探测器还是在 (3D) 重建对象方面。我们发现，在 CT 数据采集和重建方面，BCC 点阵优于 CC 点阵。例如，它们提高了小特征的恢复和可检测性，例如大脑中的小肿瘤。
We show that the familiar Cartesian lattice, while convenient for signal processing and representation, is suboptimal when it comes to signal fidelity. We explore various applications of optimal sampling lattices, such as the Hexagonal and Body Centered Cartesian (BCC) lattices for 3D Computed Tomographic (CT) Reconstruction, both in terms of the (2D) detector and the (3D) reconstructed object. We find that BCC lattices compare favorably with CC lattices for both CT data acquisition and reconstruction. For example they increase the recovery and detectability of small features, such as small tumors in the brain.