CASIA OpenIR  > 中国科学院分子影像重点实验室
The Prediction Algorithm of the Optimal X-Ray Tube Voltage in Variable Energy Imaging
Bi Yan1; Chen Ping1,2; Han Yan1
2015-03-01
发表期刊SPECTROSCOPY AND SPECTRAL ANALYSIS
卷号35期号:3页码:820-824
文章类型Article
摘要X-ray variable energy imaging can obtain the sectional information of complicated structural component successively, and get the whole information by multi-spectrum fusion. Now the energy parameters of X ray imaging mainly depend on man-made setting with the certain step voltage. However this modulation doesn't match to the attenuation thickness variation of the object. Therefore, this paper proposes an optimum tube voltage prediction algorithm based on variable energy imaging. It extracts the effective thickness (ET) and near the effective thickness (NET) in the image sequences which are acquired by pre-scanning the detected object. Then it establishes a physical model between image gray, tube voltage and X ray spectrum. And the model of voltage and gray difference between the ET (high quality area) and NET (prediction area) is also established. On the basis of these two models, the optimal imaging energy forecasting model of NET is modeled. Then, solve the model and get the optimal voltage for NET. At last, by the experiment of the steel blocks with different thickness, testify this prediction algorithm. The results compared with the actual values showed that the prediction algorithm can accurately predict 3 or 4 mm at low voltage and 7 or 10 mm at high voltage. Prediction accuracy is over 95%.
关键词X-ray Spectrum Complicated Structural Component Variable Energy Voltage Prediction Effective Thickness
WOS标题词Science & Technology ; Technology
收录类别SCI
语种英语
WOS研究方向Spectroscopy
WOS类目Spectroscopy
WOS记录号WOS:000351025600048
引用统计
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/10737
专题中国科学院分子影像重点实验室
作者单位1.North Univ China, Shanxi Key Lab Signal Capturing & Proc, Taiyuan 030051, Peoples R China
2.Chinese Acad Sci, Key Lab Mol Imaging, Inst Automat, Beijing 100190, Peoples R China
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GB/T 7714
Bi Yan,Chen Ping,Han Yan. The Prediction Algorithm of the Optimal X-Ray Tube Voltage in Variable Energy Imaging[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2015,35(3):820-824.
APA Bi Yan,Chen Ping,&Han Yan.(2015).The Prediction Algorithm of the Optimal X-Ray Tube Voltage in Variable Energy Imaging.SPECTROSCOPY AND SPECTRAL ANALYSIS,35(3),820-824.
MLA Bi Yan,et al."The Prediction Algorithm of the Optimal X-Ray Tube Voltage in Variable Energy Imaging".SPECTROSCOPY AND SPECTRAL ANALYSIS 35.3(2015):820-824.
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