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

Zhaobin LI; Yi SUN; Yaohong LU; Shen FU

doi:10.13538/j.1001-8042/nst.20.31-36

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

RADIOCHEMISTRY, RADIOPHARMACEUTICALS AND NUCLEAR MEDICINE | 更新时间：2021-01-29

- The role of high-energy computed radiography (CR) in radiotherapy
- The role of high-energy computed radiography (CR) in radiotherapy
- 核技术（英文版） 2009年20卷第1期
- 作者机构：
  
  1.Department of Radiation Oncology, the No.6 Hospital of Shanghai JiaoTong University, Shanghai 200233, China
- 作者简介：
  
  Corresponding author. E-mail address: shen_fu@hotmail.com
  
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- 基金信息：
  
  Municipal Health Bureau of Shanghai
- DOI：10.13538/j.1001-8042/nst.20.31-36 中图分类号：
- 纸质出版日期：2009-02-20，
  
  收稿日期：2008-04-22，
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引用本文
Zhaobin LI, Yi SUN, Yaohong LU, 等. The role of high-energy computed radiography (CR) in radiotherapy[J]. 核技术（英文版）, 2009, 20(1):31-36.

Zhaobin LI, Yi SUN, Yaohong LU, et al. The role of high-energy computed radiography (CR) in radiotherapy[J]. Nuclear Science and Techniques, 2009, 20(1):31-36.
Zhaobin LI, Yi SUN, Yaohong LU, 等. The role of high-energy computed radiography (CR) in radiotherapy[J]. 核技术（英文版）, 2009, 20(1):31-36. DOI： 10.13538/j.1001-8042/nst.20.31-36.

Zhaobin LI, Yi SUN, Yaohong LU, et al. The role of high-energy computed radiography (CR) in radiotherapy[J]. Nuclear Science and Techniques, 2009, 20(1):31-36. DOI： 10.13538/j.1001-8042/nst.20.31-36.

The role of high-energy computed radiography (CR) in radiotherapy 1 equal first-author 1 equal 1 1 corresp Corresponding author. E-mail address: shen_fu@hotmail.com Corresponding author. E-mail address: shen_fu@hotmail.com shen_fu@hotmail.com Department of Radiation Oncology, the No.6 Hospital of Shanghai JiaoTong University, Shanghai 200233, China 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 them. CR can be used in radiation Quality Control (QC) task and verification of treatment setting-up. In this paper, the role of high-energy CR in radiation oncology is studied. The patients were imaged by CR system and EPID before radiotherapy. All verification images were acquired with 1-2 MU (Monitor Unit) using 6 MV X-rays. QC for a linac was done with film and high-energy CR to collect the data on daily, weekly and monthly basis. The QC included Multileaf Collimators (MLC) calibration and mechanical iso-centre check. CR 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 comparison. High quality verification images could be acquired by the CR system. Comparing 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 oncology. The 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. Computed radiography Verification images Quality control Radiotherapy References John R Z , Charles B , Pai Chun C , et al . Med Dosimetry , 2004 , 29 : 118 - 121 . Med Dosimetry Li Z B , Xiong F , Huang G F , et al . Nucl Sci Tech , 2007 , 18 : 145 - 149 . Nucl Sci Tech Peter B , Richard W , Della M H . Application of computed radiography for portal imaging in radiation oncology . Proceedings of the 22nd Annual EMBS International Conference , July 23-28, 2000 , Chicago IL . Application of computed radiography for portal imaging in radiation oncology Langmack, K A . Br J Radiol , 2001 , 74 : 789 - 804 . Br J Radiol Sandra C V , René A B , Maarten L P D . Radiother Oncol , 2006 , 80 : 86 - 92 . Radiother Oncol Yan D , Ziaja E , Jaffray D , et al . Int J Radiat Oncol Biol Phys , 1998 , 41 : 715 - 720 . Int J Radiat Oncol Biol Phys Vigneault E , Pouliot J , Laverdiere J , et al . Int J Radiat Oncol Biol Phys . 1997 , 37 : 205 - 212 . Int J Radiat Oncol Biol Phys Zhu Z F , Xu Z Y , Fu X L , et al . China oncol , 2006 , 16 : 154 - 157 . China oncol James H V , Atherton S , Budgell G J , et al . Phys Med Biol , 2000 , 45 : 495 - 509 . Phys Med Biol Essers M , de Langen M , Dirkx M L P , et al . Radiother Oncol , 2001 , 60 : 215 - 224 . Radiother Oncol De Wagter C , Martens C , De Deene Y et al . Cancer Radiother , 1999 , 3 ( Suppl 1 ): 171 - 182 . Cancer Radiother Hideki F , Michihiro Y , Toshizo K , et al . Radiat Med , 2005 , 23 : 550 - 556 . Radiat Med Sanfridsson J , Holje G , Svahn G , et al . Acta Radiologica , 2000 , 41 : 310 - 315 . Acta Radiologica Don S , Hildebolt C F , Sharp T L , et al . Radiology , 1999 , 213 : 455 - 460 . Radiology May G A , Deer D D , Dackiewicz D . J Digit Imaging , 2000 , 13 ( 2 Suppl 1 ): 76 - 78 . J Digit Imaging Scheck R J , Wendt T , Panzer M . Br J Radiol , 1993 , 66 : 801 - 806 . Br J Radiol El-Mohri Y , Antonuk L E , Yorkston J , et al . Med Phys , 1999 , 26 : 1530 - 1541 . Med Phys Yeboah C , Pistorius S . Med Phys , 2000 , 27 : 330 - 339 . Med Phys Artz D S . Semin Roentgenol , 1997 , 32 : 12 - 24 . Semin Roentgenol Leblans P A . J Digit Imaging , 2000 , 13 : 117 - 120 . J Digit Imaging 10.13538/j.1001-8042/nst.20.31-36 Supported by the Municipal Health Bureau of Shanghai (Contract No. 04017) 2008-04-22 2009-02-20 2021-01-19 2009 Nuclear Science and Techniques 01 20

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