Improvement of Efficiency and Flexibility in Multi-slice Helical CT

被引：0

作者：

孙文武 ^{[1
]}

陈思平 ^{[2
]}

庄天戈 ^{[3
]}

机构：

[1] Nanchang Institute of Aeronautical Technology

[2] Shenzhen University

[3] Department of Biomedical Engineering,Shanghai Jiaotong University

来源：

JournalofShanghaiJiaotongUniversity(Science) | 2008年 / 04期

关键词：

multi-slice computed tomography; helical interpolation; rebinning; filter interpolation;

D O I：

暂无

中图分类号：

TP391.41 [];

学科分类号：

080203 ;

摘要：

One of the main aspects in computed tomography (CT) development is to make CT rapidly scan a large longitudinal volume with high z-axis resolution. The combination of helical scanning with multi-slice CT is a promising approach. Image reconstruction in multi-slice CT becomes, therefore, the major challenge. Known algorithms need to derive the complementary data or work only for certain range of pitches. A reconstruction algorithm was presented that works with the direct data as well as arbitrary pitches. Filter interpolation based on the proposed method was implemented easy. The results of computer simulations under kinds of conditions for four-slice CT were presented. The proposed method can obtain higher efficiency than the conventional method.

引用

页码：408 / 412

页数：5

共 5 条

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[2] Field-of-view depen-dent helical pitch in multi-slice CT. Silver M D,Taguchi K,Han K S. Proceedings of SPIE the International Society for Optical Engineering . 2001
[3] CT image reconstruction from fan-parallel data. Besson G. Medical Physics . 1999
[4] Single-slice rebinning reconstruction in helical cone-beam computed tomography. Bruder H,Kachelriess M,Schaller S, et al. IEEE Transactions on Medical Imaging . 2000
[5] The n-PI-method for helical cone-beamCT. Proksa,R. et al. IEEE Trans.Med.Imaging . 2000

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