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	Segmentation short scan FDK reconstruction algorithm for cone-beam CT
	Chen Lian ; Wu Zhifang ; Wang Qinya
	2010-10-12 ; 2010-10-12
关键词	Practical/ computerised tomography image reconstruction image segmentation medical image processing/ segmentation short scan FDK reconstruction circular trajectory cone-beam computed tomography data loss cone-beam angle artifacts image reconstruction image quality Feldkamp-Davis-Kress algorithm data completeness reconstruction complexity reconstruction region height/ A8760J X-rays and particle beams (medical uses) A8770E Patient diagnostic methods and instrumentation B7510P X-ray techniques: radiography and computed tomography (biomedical imaging/measurement) B6135 Optical, image and video signal processing C7330 Biology and medical computing C5260B Computer vision and image processing techniques
中文摘要	The data loss and cone-beam angle artifacts increase with cone angle in circular trajectory cone-beam computed tomography (CT). This limits the reconstruction coverage and image quality of the FDK (Feldkamp-Davis-Kress) algorithm. This paper analyzed the data completeness of the short scan FDK (SS-FDK) algorithm and presented a segmentation short scan FDK reconstruction algorithm. In the algorithm, the reconstruction slice was adaptively divided into several sub-regions according to the slice height and then the SS-FDK algorithm was used to reconstruct each sub-region. Theoretical analyses and simulations show that, although the reconstruction complexity is increased, the reconstruction region height is enlarged to 1 - sin/sup 2/ delta times of the scan height ( delta , half fan angle of the source), and the image quality and accuracy is at least comparable to that of the FDK algorithm.
语种	中文
出版者	Tsinghua University Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79367]
专题	清华大学
推荐引用方式 GB/T 7714	Chen Lian,Wu Zhifang,Wang Qinya. Segmentation short scan FDK reconstruction algorithm for cone-beam CT[J],2010, 2010.
APA	Chen Lian,Wu Zhifang,&Wang Qinya.(2010).Segmentation short scan FDK reconstruction algorithm for cone-beam CT..
MLA	Chen Lian,et al."Segmentation short scan FDK reconstruction algorithm for cone-beam CT".(2010).

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