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《CT Theory and Applications》 2011-04
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Research on Theoretical Estimation of System Performance for 3D X-ray CT with FDK Reconstruction

CAI Dong-shan,SHI Cheng,XING Yu-xiang (Department of Engineering Physics,Tsinghua University,Beijing 100084,China)  
Since X-ray CT dosage has been pushed to a low level and 3D imaging has been a trend,it is necessary to study the performance of 3D X-ray CT systems.In this work,we firstly propose a theoretical noise estimation method for 3D X-ray CT reconstructions.Then,we present four models for theoretical estimation of system performance for 3D X-ray CT based on FDK algorithm.The theories and analysis are based on Channellized Hotelling Observer(CHO).The Difference Of Gaussian(DOG)model is adapted for channels.The theories are validated by different numerical simulations.Our results demonstrate that theoretical estimation method of system performance for 3D X-ray CT accords well with the result from MC simulations.The proposed method for system performance evaluation can exempt us from some of computationally expensive Receiver Operating Character (ROC)studies.It can provide great convenience for system performance prediction and system design optimization.The method is easy to be extended to systems using other linear reconstruction algorithms.
【Fund】: 国家自然科学基金(60772051)
【CateGory Index】: TP391.41
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【Citations】
Chinese Journal Full-text Database 1 Hits
1 XING Yuxiang1, ZHENG Juan2(1. Department of Engineering Physics, Tsinghua University, Beijing 100084, China;2. Beijing Tongfang Weishi Technology Co., Limited, Beijing 100084);Numerical/Analytical evaluation of the performance of tomographic systems[J];Chinese Journal of Stereology and Image Analysis;2008-03
【Secondary Citations】
Chinese Journal Full-text Database 2 Hits
1 ZHAO Hong~*, YAO Jin-lin,ZHOU Kang-rong,YAN Fu-hua. ~*Department of Radiology, Fifth Hospital, Zhongshan University, Zhuhai 519000,China;Dynamic enhancement MRI and multirow-detector helical CT for detection of small hepatocellular carcinoma with receiver operating characteristic analysis[J];Chinese Journal of Radiology;2005-07
2 ZHANG Bi-yun, CHEN Zi-qian, ZHAO Zheng-wen, LU Guang-ming. Department of Medical Imaging, Nanjing Military General Hospital of PLA, Clinical Hospital of Medical College, Nanjing University, Nanjing 210002, China;The practice value of computer aided detection system on the diagnosis of pulmonary nodules in digital chest radiograph[J];Chinese Journal of Radiology;2005-10
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