Study of X-Rays Generated by Target in CT

LI Quan-Feng; CHENG Cheng; YAN Hui-Yong; DU Tai-Bin; CHEN Huai-Bi

Chinese Physics C> 2006, Vol. 30> Issue(10) : 1032-1035

Study of X-Rays Generated by Target in CT

Department of Engineering Physics, Tsinghua University, Beijing 100084, China

Abstract
HTML
Reference
Related

PDF

Abstract：
The X-rays generated and transported in target bombarded by electron beams in CT have been simulated with Monte Carlo code MCNP4. Photon efficiencies and forward directional characteristics of X-rays for several kinds of often-used targets were calculated and analyzed. Calculations show that as the thickness of the target increases, the photon efficiency increases and reaches a maximum, and then drops sharply for gold and tungsten target, while drops gently for cooper target. Also, the photon efficiency for cooper target is relatively small, but the angular distribution shows good forward directional characteristics, with the dose rate in the forward direction equivalent to those of tungsten or gold target. Experiment results show that the dose rate in the forward direction of a copper target is higher than that of a tungsten target for 20MeV electrons, while the angular distribution presents better forward directional characteristics compared with a tungsten target.

References

[1]

. Swanson W P. Radiological Safety Aspects of the Opera-tion of Electron Linear Accelerators, Technical Report Se-ries No. 188. Vienna: International Atomic Energy Agency,19792. Bresmeister J F. MCNP-A general Monte Carlo N-Particle Transport Code, Version 4B, Report No. LA-12625-M. Los Alamos (USA): Los Alamos National Laboratory, 19973. Nordell B, Brahme A. Phys. Med. Biol., 1984, 29(7): 797-8104. GUO Bing-Qi, LI Quan-Feng, DU Tai-Bin et al. HEP NP, 2005, 29(12): 1190-1195(in Chinese)(郭冰琪, 李泉风, 杜泰斌等.高能物理与核物理, 2005, 29(12): 1190-1195)5. Jallu F, Lyoussi A, Payan E et al. Nuclear Instruments andMethods in Physics Research, 1999, B155(4): 373-381

[1]	Hai-Nan Lin , Xin Li , Yu Sang . Local probes strongly favor ∧CDM against power-law and R_h=ct universe. Chinese Physics C, 2018, 42(9): 095101. doi: 10.1088/1674-1137/42/9/095101
[2]	Kui-Dong Huang , Zhe Xu , Ding-Hua Zhang , Hua Zhang , Wen-Long Shi . Robust scatter correction method for cone-beam CT using an interlacing-slit plate. Chinese Physics C, 2016, 40(6): 068202. doi: 10.1088/1674-1137/40/6/068202
[3]	WANG Sheng-Hao , ZHANG Kai , WANG Zhi-Li , GAO Kun , WU Zhao , ZHU Pei-Ping , WU Zi-Yu . A user-friendly nano-CT image alignment and 3D reconstruction platform based on LabVIEW. Chinese Physics C, 2015, 39(1): 018001. doi: 10.1088/1674-1137/39/1/018001
[4]	ZHANG Hua , HUANG Kui-Dong , SHI Yi-Kai , XU Zhe . Point spread function modeling and image restoration for cone-beam CT. Chinese Physics C, 2015, 39(3): 038202. doi: 10.1088/1674-1137/39/3/038202
[5]	YANG Min , WANG Xiao-Long , LIU Yi-Peng , MENG Fan-Yong , LI Xing-Dong , LIU Wen-Li , WEI Dong-Bo . Automatic calibration method of voxel size for cone-beam 3D-CT scanning system. Chinese Physics C, 2014, 38(4): 046202. doi: 10.1088/1674-1137/38/4/046202
[6]	SHEN Shan-Wei , WANG Yan-Fang , SHU Hang , TANG Xiao , WEI Cun-Feng , SONG Yu-Shou , SHI Rong-Jian , WEI Long . Experimental measurement of radiation dose in a dedicated breast CT system. Chinese Physics C, 2014, 38(3): 038201. doi: 10.1088/1674-1137/38/3/038201
[7]	TANG Xiao , ZHAO Wei , WANG Yan-Fang , SHU Hang , SUN Cui-Li , WEI Cun-Feng , CAO Da-Quan , QUE Jie-Min , SHI Rong-Jian , WEI Long . Monte Carlo simulation of glandular dose in a dedicated breast CT system. Chinese Physics C, 2012, 36(7): 675-680. doi: 10.1088/1674-1137/36/7/019
[8]	HE Peng-Bo , LI Qiang , LIU Xin-Guo . Experimental measurement of the correlation between CT number and heavy ion range. Chinese Physics C, 2012, 36(10): 954-957. doi: 10.1088/1674-1137/36/10/006
[9]	DENG Biao , YANG Qun , XIE Hong-Lan , DU Guo-Hao , XIAO Ti-Qiao . First X-ray fluorescence CT experimental results at the SSRF X-ray imaging beamline. Chinese Physics C, 2011, 35(4): 402-404. doi: 10.1088/1674-1137/35/4/015
[10]	ZHAO Wei , FU Guo-Tao , SUN Cui-Li , WANG Yan-Fang , WEI Cun-Feng , CAO Da-Quan , QUE Jie-Min , TANG Xiao , SHI Rong-Jian , WEI Long , YU Zhong-Qiang . Beam hardening correction for a cone-beam CT system and its effect on spatial resolution. Chinese Physics C, 2011, 35(10): 978-985. doi: 10.1088/1674-1137/35/10/018
[11]	YANG Min , JIN Xu-Ling , LI Bao-Lei . A new method to determine the projected coordinate origin of a cone-beam CT system using elliptical projection. Chinese Physics C, 2010, 34(10): 1665-1670. doi: 10.1088/1674-1137/34/10/022
[12]	RONG Jun-Yan , FU Guo-Tao , WEI Cun-Feng , SUN Cui-Li , WEI Long . Measurement of spatial resolution of the micro-CT system. Chinese Physics C, 2010, 34(3): 412-416. doi: 10.1088/1674-1137/34/3/022
[13]	SUN Li-Juan , CUI Ming-Qi , ZHU Jie , ZHAO Yi-Dong , ZHENG Lei , MA Chen-Yan , CHEN Kai , ZHAO Jia , ZHOU Ke-Jin , WANG Zhan-Shan , WANG Hong-Chang . Polarization Characteristic Measurements of the Synchrotron Radiation Beamline Based on Multilayer. Chinese Physics C, 2007, 31(4): 400-404.
[14]	LI Liang , CHEN Zhi-Qiang , ZHANG Li , XING Yu-Xiang , KANG Ke-Jun . A New Cone-Beam X-Ray CT System with a Reduced Size Planar Detector. Chinese Physics C, 2006, 30(8): 812-817.
[15]	YUAN Qing-Xi , WANG Jun-Yue , ZHU Pei-Ping , HUANG Wan-Xia , SHU Hang , HU Tian-Dou , WU Ziyu . Computed Tomography Using Peak-Position Image of Diffraction Enhanced Imaging. Chinese Physics C, 2005, 29(10): 1023-1026.
[16]	YU Neng-Jie , TANG Chuan-Xiang , ZHENG Shu-Xin , LI Quan-Feng , GONG Ke . 2-D Beam Profile Measurement Based on CT Algorithm with Rotating Multi-Wire Target. Chinese Physics C, 2005, 29(4): 408-412.
[17]	LONG Ji-Dong , SHI Jin-Shui , YU Hai-Jun , LIN Yu-Zheng . Bremsstrahlung Characteristics of Thick-Target Applied in High Energy X-Ray Facility. Chinese Physics C, 2004, 28(11): 1238-1243.
[18]	Xu Chuncheng , Ye Yanlin , Chen Tao , Ying Jun , Ma Jingguo , Liu Hongtao . Study on the Parameters of the Lead Spallation Target. Chinese Physics C, 1999, 23(4): 402-408.
[19]	Jiang Haiyin , Wang Dewu , Liu Jianfei , Wu Zhonghua , Xie Yahing , Gu Mu , Chen Lingyan . Study of Fluorescent Decay Properties of Fluorides With Beijing Synchrotron Radiation Source. Chinese Physics C, 1996, 20(12): 1103-1109.
[20]	ZHAO Ji-Yong , YANG Ping , JIANG Jian-Hua , TIAN Yu-Lian , HAN Yong , WANG Chun-Xi , SHI Cai-Tu , XIAN Ding-Chang . Light Source for Synchrotron Radiation X-Ray Topography Study at Beijing Syncrotron Radiation Laboratory (BSRL). Chinese Physics C, 1992, 16(8): 679-684.

Access

Get Citation

LI Quan-Feng, CHENG Cheng, YAN Hui-Yong, DU Tai-Bin and CHEN Huai-Bi. Study of X-Rays Generated by Target in CT[J]. Chinese Physics C, 2006, 30(10): 1032-1035.

LI Quan-Feng, CHENG Cheng, YAN Hui-Yong, DU Tai-Bin and CHEN Huai-Bi. Study of X-Rays Generated by Target in CT[J]. Chinese Physics C, 2006, 30(10): 1032-1035. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2006-01-07
Revised: 2006-04-10

Article Metric

Article Views(4426)
PDF Downloads(689)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Study of X-Rays Generated by Target in CT

Corresponding author: LI Quan-Feng,

Department of Engineering Physics, Tsinghua University, Beijing 100084, China

Received Date: 2006-01-07

Accepted Date: 2006-04-10

Available Online: 2006-10-05

Abstract: The X-rays generated and transported in target bombarded by electron beams in CT have been simulated with Monte Carlo code MCNP4. Photon efficiencies and forward directional characteristics of X-rays for several kinds of often-used targets were calculated and analyzed. Calculations show that as the thickness of the target increases, the photon efficiency increases and reaches a maximum, and then drops sharply for gold and tungsten target, while drops gently for cooper target. Also, the photon efficiency for cooper target is relatively small, but the angular distribution shows good forward directional characteristics, with the dose rate in the forward direction equivalent to those of tungsten or gold target. Experiment results show that the dose rate in the forward direction of a copper target is higher than that of a tungsten target for 20MeV electrons, while the angular distribution presents better forward directional characteristics compared with a tungsten target.

HTML

Reference (1)

Study of X-Rays Generated by Target in CT

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article