共 6 条
Scatter correction method for cone-beam CT based on interlacing-slit scan
被引：0
作者：
黄魁东
[1
]
张华
[2
]
史仪凯
[2
]
张亮
[1
]
徐哲
[1
]
机构：
[1] Key Laboratory of Contemporary Design and Integrated Manufacturing Technology of the Ministry of Education,Northwestern Polytechnical University
[2] School of Mechanical Engineering,Northwestern Polytechnical University
关键词：
cone-beam computed tomography;
scatter correction;
interlacing slits;
image fusion;
D O I：
暂无
中图分类号：
R814.4 [各种X线诊断];
TP391.41 [];
学科分类号：
1001 ;
100105 ;
100207 ;
100602 ;
080203 ;
摘要：
Cone-beam computed tomography(CBCT) has the notable features of high efficiency and high precision, and is widely used in areas such as medical imaging and industrial non-destructive testing. However, the presence of the ray scatter reduces the quality of CT images. By referencing the slit collimation approach, a scatter correction method for CBCT based on the interlacing-slit scan is proposed. Firstly, according to the characteristics of CBCT imaging, a scatter suppression plate with interlacing slits is designed and fabricated. Then the imaging of the scatter suppression plate is analyzed, and a scatter correction calculation method for CBCT based on the image fusion is proposed, which can splice out a complete set of scatter suppression projection images according to the interlacing-slit projection images of the left and the right imaging regions in the scatter suppression plate, and simultaneously complete the scatter correction within the flat panel detector(FPD). Finally, the overall process of scatter suppression and correction is provided. The experimental results show that this method can significantly improve the clarity of the slice images and achieve a good scatter correction.
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页码：519 / 525
页数：7
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