圆锥束计算机断层扫描中的快速反投影滤波算法

IF 1.8 4区物理与天体物理 Q3 OPTICS

International Journal of Optics Pub Date : 2023-10-23 DOI:10.1155/2023/1749624

Xianchao Wang, Yong Zhang, Xingyong Hong, Honghai Wang

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引用次数: 1

摘要

针对圆锥束计算机断层扫描(CT)中反投影滤波(BPF)算法反投影计算量大的问题，提出了一种采用固定扫描角度积分区间积分算子的快速反投影方法。该方法结合Hilbert滤波和Blackman窗滤波，得到了快速的BPF (F-BPF)算法。仿真数据和实际数据的实验结果表明，该算法仅对半圆投影数据就能实现高质量的重构图像。

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Fast Backprojection Filtration Algorithm in Circular Cone-Beam Computed Tomography

In order to meet the heavy backprojection calculation of the backprojection filtration (BPF) algorithm in circular cone-beam computed tomography (CT), a fast backprojection method is developed, which uses the integral operator of the fixed scanning angle integral interval. The proposed method combines with Hilbert filtration and the filter of the Blackman window, and then, the fast BPF (F-BPF) algorithm is obtained. The experimental results of simulation data and real data demonstrate that the proposed algorithm is fast enough for high-quality reconstructed images only with half-circle projection data.

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来源期刊

International Journal of Optics Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

3.40

自引率

5.90%

发文量

审稿时长

13 weeks

期刊介绍： International Journal of Optics publishes papers on the nature of light, its properties and behaviours, and its interaction with matter. The journal considers both fundamental and highly applied studies, especially those that promise technological solutions for the next generation of systems and devices. As well as original research, International Journal of Optics also publishes focused review articles that examine the state of the art, identify emerging trends, and suggest future directions for developing fields.