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The role of high-energy computed radiography(CR)in radiotherapy

Nuclear Science and Techniques 2009年第1期20卷 31-36页

作者： LI Zhaobin SUN Yi LU Yaohong FU Shen Department of Radiation Oncology the No.6 Hospital of Shanghai JiaoTong University Shanghai 200233 China

Computed radiography(CR)imaging has high irradiation tolerance and it is easy to archive CR images along with other image information by Digital Imaging and Communications in Medicine(DICOM)format,and to process *** can be used in radiation Quality Control(QC)task and verification of treatment *** this paper,the role of high-energy CR in radiation oncology is *** patients were imaged by CR system and EPID before *** verification images were acquired with 1–2 MU(Monitor Unit)using 6 MV *** for a linac was done with film and high-energy CR to collect the data on daily,weekly and monthly *** QC included Multileaf Collimators(MLC)calibration and mechanical iso-centre *** was also adapted to verify patient position,the film was used to compare with digitally reconstructed radiographs(DRR)and portal image from EPID. Treatment setting-up was verified based on the result of *** quality verification images could be acquired by the CR *** to EPID,the results showed that the system was suitable for practical use to acquire daily verification images,and it was useful to fulfill part of quality assurance(QA)in radiation *** quality of image acquired by the high-energy CR system is comparable or even better than DRRs and portal images. The final treatment set-up for the patients could be verified more accurately with the CR system.

关键词：计算机x摄影方法影像效果图像融合医学应用

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