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首页> 外文期刊>Philosophical transactions of the Royal Society. Mathematical, physical, and engineering sciences >Introduction: a brief overview of iterative algorithms in X-ray computed tomography
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Introduction: a brief overview of iterative algorithms in X-ray computed tomography

机译:简介:X射线计算机断层扫描中的迭代算法的简要概述

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This paper presents a brief overview of some basic iterative algorithms, and more sophisticated methods are presented in the research papers in this issue. A range of algebraic iterative algorithms are covered here including ART, SART and OS-SART. A major limitation of the traditional iterative methods is their computational time. The Krylov subspace based methods such as the conjugate gradients (CG) algorithm and its variants can be used to solve linear systems of equations arising from large-scale CT with possible implementation using modern high-performance computing tools. The overall aim of this theme issue is to stimulate international efforts to develop the next generation of X-ray computed tomography (CT) image reconstruction software.
机译:本文简要介绍了一些基本的迭代算法,并在本期的研究论文中介绍了更复杂的方法。这里涵盖了一系列代数迭代算法,包括ART,SART和OS-SART。传统迭代方法的主要局限性在于它们的计算时间。基于Krylov子空间的方法(例如共轭梯度(CG)算法及其变体)可用于求解大规模CT产生的线性方程组,并可以使用现代高性能计算工具来实现。本主题的总体目标是激发国际社会开发下一代X射线计算机断层扫描(CT)图像重建软件的努力。

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