Multiple helical scans and the reconstruction of over FOV-sized objects in cone-beam CT

doi:10.1088/1674-1056/21/6/068701

中国物理B ›› 2012, Vol. 21 ›› Issue (6): 68701-068701.doi: 10.1088/1674-1056/21/6/068701

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Multiple helical scans and the reconstruction of over FOV-sized objects in cone-beam CT

韩玉^a, 闫镔^a, 李磊^a, 宇超群^b, 李建新^a, 包尚联^c

a. Information Engineering Institute, Information Engineering University, Zhengzhou 450002, China;
b. Surveying & Mapping Institute, Information Engineering University, Zhengzhou 450002, China;
c. Beijing City Key Laboratory of Medical Physics & Engineering, Peking University, Beijing 100871, China

收稿日期:2011-10-22 修回日期:2012-02-21 出版日期:2012-05-01 发布日期:2012-05-01
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2011CB707701), the National High Technology Research and Development Program of China (Grant No. 2009AA012200), and the National Nature Science Foundation of China (Grant No. 30970722).

Multiple helical scans and the reconstruction of over FOV-sized objects in cone-beam CT

Han Yu(韩玉)^a), Yan Bin(闫镔)^a)†, Li Lei(李磊)^a), Yu Chao-Qun(宇超群)^b), Li Jian-Xin(李建新)^a), and Bao Shang-Lian(包尚联)^c)

a. Information Engineering Institute, Information Engineering University, Zhengzhou 450002, China;
b. Surveying & Mapping Institute, Information Engineering University, Zhengzhou 450002, China;
c. Beijing City Key Laboratory of Medical Physics & Engineering, Peking University, Beijing 100871, China

Received:2011-10-22 Revised:2012-02-21 Online:2012-05-01 Published:2012-05-01
Contact: Yan Bin E-mail:ybspace@yahoo.com.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2011CB707701), the National High Technology Research and Development Program of China (Grant No. 2009AA012200), and the National Nature Science Foundation of China (Grant No. 30970722).

摘要/Abstract

摘要： In cone-beam computed tomography (CBCT), there are often cases where the size of the specimen is larger than the field of view (FOV) (referred to as over FOV-sized (OFS)). To acquire the complete projection data for OFS objects, some scan modes have been developed for long objects and short but over-wide objects. However, these modes still cannot meet the requirements for both longitudinally long and transversely wide objects. In this paper, we propose a multiple helical scan mode and a corresponding reconstruction algorithm for both longitudinally long and transversely wide objects. The simulation results show that our model can deal with the problem and that the results are acceptable, while the OFS object is twice as long compared with the FOV in the same latitude.

关键词: large object, multiple helical scans, reconstruction algorithm, cone-beam computed tomography

Abstract: In cone-beam computed tomography (CBCT), there are often cases where the size of the specimen is larger than the field of view (FOV) (referred to as over FOV-sized (OFS)). To acquire the complete projection data for OFS objects, some scan modes have been developed for long objects and short but over-wide objects. However, these modes still cannot meet the requirements for both longitudinally long and transversely wide objects. In this paper, we propose a multiple helical scan mode and a corresponding reconstruction algorithm for both longitudinally long and transversely wide objects. The simulation results show that our model can deal with the problem and that the results are acceptable, while the OFS object is twice as long compared with the FOV in the same latitude.

Key words: reconstruction algorithm, cone-beam computed tomography, large object, multiple helical scans

中图分类号: (X-ray imaging)

87.59.-e

07.85.-m (X- and γ-ray instruments)

韩玉, 闫镔, 李磊, 宇超群, 李建新, 包尚联. Multiple helical scans and the reconstruction of over FOV-sized objects in cone-beam CT[J]. 中国物理B, 2012, 21(6): 68701-068701.

Han Yu(韩玉), Yan Bin(闫镔), Li Lei(李磊), Yu Chao-Qun(宇超群), Li Jian-Xin(李建新), and Bao Shang-Lian(包尚联) . Multiple helical scans and the reconstruction of over FOV-sized objects in cone-beam CT[J]. Chin. Phys. B, 2012, 21(6): 68701-068701.

参考文献 19

[1]	Feldkamp A L, Davis L C and Kress J W 1984 Opt. Soc. Am. A 1 612
[2]	Zou Y, Pan X C and Sidky E Y 2005 Opt. Soc. Am. 22 2372
[3]	Yu L, Xia D, Zou Y, Pan X C, Pelizzari and Munro P 2006 IEEE Trans. Med. Image. 25 869
[4]	Li L, Kang K J, Chen Z Q, Zhang L and Xing Y X 2009 J. X-ray Sci. Tech. 17 135
[5]	Sidky E Y and Pan X C 2008 Phys. Med. Biol. 53 4777
[6]	Wang L Y, Li L, Yan B, Jiang C S, Wang H Y and Bao S L 2010 Chin. Phys. B 19 088106
[7]	Wang G, Lin T H, Cheng P C, Shinozaki D M and Kim H 1991 Proc. SPIE 1556 99
[8]	Kudo H and Satio T 1991 Nuclear Science Symposium and Medical Imaging Conference November 2-9, 1991 Baldwin, Santa Fe, USA, p. 1958
[9]	Wang G 2002 Med. Phys. 29 1634
[10]	Li L, Chen Z Q, Zhang L, Xing Y X and Kang K J 2006 High Energy Phys. Nucl. Phys. 30 812 (in Chinese)
[11]	Fu J and Gong L 2006 Opt. Tech. 32 209 (in Chinese)
[12]	Fu J and Lu H N 2005 Journal of Beijing University of Aeronautics and Astronautics 31 966 (in Chinese)
[13]	Gong L, Fu J, Lu H N and Zhao F 2006 Opt. Tech. 32 567 (in Chinese)
[14]	Chen M, Zhang H T and Zhang P 2008 Progress in Natural Science 18 209
[15]	Turbell H and Danielsson P E 1999 Proc. IEEE Medical Imaging, November 8-14, 1998 Toronto, Canada, p. 1424
[16]	Tam K C 1995 US Patent 2 5390112
[17]	Danielsson P E, Edholm P and Seger M 1997 International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine Pennsylvania, June 25-28, 1997 USA, p. 141
[18]	Wang G, Lin T H, Cheng P C and Shinozaki D M 1993 IEEE Transactions on Medical Imaging 12 486
[19]	Wang G, Ye Y B and Yu H Y 2007 Phys. Med. Biol. 52 R1

Multiple helical scans and the reconstruction of over FOV-sized objects in cone-beam CT

Multiple helical scans and the reconstruction of over FOV-sized objects in cone-beam CT

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 19

相关文章 2

Metrics

本文评价

推荐阅读 0

[1]	黄魁东, 张华, 史仪凯, 张亮, 徐哲. Scatter correction method for cone-beam CT based on interlacing-slit scan[J]. , 2014, 23(9): 98106-098106.
[2]	王林元, 李磊, 闫镔, 江成顺, 王浩宇, 包尚联. An algorithm for computed tomography image reconstruction from limited-view projections[J]. 中国物理B, 2010, 19(8): 88106-088106.