Physical Property Measurement of Therapeutic Carbon Ion Beam in the Shallow-Seated Tumor Therapy Terminal at HIRFL

DAI Zhong-Ying; LI Qiang; YAN Zheng; JIN Xiao-Dong; HU Zheng-Guo; XIAO Guo-Qing

Chinese Physics C> 2006, Vol. 30> Issue(9) : 920-924

Physical Property Measurement of Therapeutic Carbon Ion Beam in the Shallow-Seated Tumor Therapy Terminal at HIRFL

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China

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Abstract：
For the first time the physical properties of therapeutic carbon-ion beam supplied by the shallow-seated tumor therapy terminal at the Heavy Ion Research Facility in Lanzhou (HIRFL) are measured. For a 80.55MeV/u ¹²C ion beam delivered to the therapy terminal, the homogeneity of irradiation fields is 73.48%, when the beam intensity varied in the range of 0.001—0.1nA (i.e. 1×10⁶—1×10⁸ particles per second). The stability of the beam intensity within a few minutes is estimated to be 80.87%. The depth-dose distribution of the beam at the isocenter of the therapy facility is measured, and the position of the high-dose Bragg peak is found to be located at the water-equivalent depth of 13.866mm. Based on the relationship between beam energy and Bragg peak position, the corresponding beam energy at the isocenter of the therapy terminal is evaluated to be 71.71MeV/u for the original 80.55MeV/u ¹²C ion beam, which consisted basically with calculation. The readout of the previously-used air-free ionization chamber regarding absorbed dose is calibrated as well in this experiment. The results indicate that the performance of the therapy facility should be optimized further to meet the requirements of clinical trial.

References

[1]

. Kraft G et al. Strahlenlher Onkol, 1990, 166: 1-132. Hishikawa Y, Kagawa K et al. J. Jpn. Soc. Ther. Radiol.Oncol., 2002, 14: 73-773. LI Qiang, WEI Zeng-Quan et al. Nuclear Physics Review,2001, 18(2): 109-115(in Chinese)(李强,卫增泉等.原子核物理评论,2001,18(2):109—115)4. WEN Xiao-Qiong, LI Qiang, LI Wen-Jian et al. NuclearPhysics Review, 2001, 18(3): 177-180(in Chinese)(温小琼，李强，李文建等.原子核物理评论,2001,18(3):177—180)5. Faiz M. The Physics of Radiation Therapy. Philadelphia:Lipincott Williams Wilkins. 2003. 106-1766. LI Qiang, XIE Hong-Mei, LI Wen-Jian et al. NuclearPhysics Review, 2003, 20(1): 48-51(in Chinese)(李强，颉红梅，李文建等.原子核物理评论，2003, 20(1): 48-51)7. XIE Hong-Mei, WEI Zeng-Quan et al. Nuclear Technology,1997, 20: 230-234(in Chinese)(颉红梅，卫增泉等.核技术1997, 20: 230-234) 8. YU Chang-Qing et al. The Base of Proton Radiotherapeu-tic Technology. Beijing: Atomic Energy Press, 1999(in Chinese)(郁长庆等.质子治疗技术基础.北京:原子能出版社，1999)9. LI Qiang, WEI Zeng-Quan, LI Wen-Jian et al. HEP NP,1998, 22(7): 646-650(in Chinese)(李强，卫增泉，李文建等.高能物理与核物理，1998, 22(7):646-650)10. ZHU Kun et al. Nuclear Physics Review, 2003, 20(3):197-200(in Chinese)(朱昆等.原子核物理评论，2003, 20(3): 197-200)11. IAEA. Absorbed dose determination in external beam ra-diotherapy: An international code of practice for dosimetrybased on standards of absorbed dose to water. IAEA Tech-nical Reports Series No 398. Austria: IAEA. 2001: 27-13112. Endo M, Koyama-Ito H, Minohara S et al. J. Jpn. Soc.Ther. Radiol. Oncol., 1996, 8: 231-23813. Sihver L, Schardt D, Kanai T. Jpn. J. Med. Phys., 1998,18: 1-2114. Kanai T, Endo M, Minohara S et al. Int. J. Radiat. Oncol.Biol. Phys., 1999, 44: 201-210

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DAI Zhong-Ying, LI Qiang, YAN Zheng, JIN Xiao-Dong, HU Zheng-Guo and XIAO Guo-Qing. Physical Property Measurement of Therapeutic Carbon Ion Beam in the Shallow-Seated Tumor Therapy Terminal at HIRFL[J]. Chinese Physics C, 2006, 30(9): 920-924.

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Received: 2005-11-28
Revised: 2006-01-20

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沈阳化工大学材料科学与工程学院沈阳 110142

Physical Property Measurement of Therapeutic Carbon Ion Beam in the Shallow-Seated Tumor Therapy Terminal at HIRFL

Corresponding author: LI Qiang,

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2005-11-28
Accepted Date: 2006-01-20
Available Online: 2006-09-05

Abstract: For the first time the physical properties of therapeutic carbon-ion beam supplied by the shallow-seated tumor therapy terminal at the Heavy Ion Research Facility in Lanzhou (HIRFL) are measured. For a 80.55MeV/u ¹²C ion beam delivered to the therapy terminal, the homogeneity of irradiation fields is 73.48%, when the beam intensity varied in the range of 0.001—0.1nA (i.e. 1×10⁶—1×10⁸ particles per second). The stability of the beam intensity within a few minutes is estimated to be 80.87%. The depth-dose distribution of the beam at the isocenter of the therapy facility is measured, and the position of the high-dose Bragg peak is found to be located at the water-equivalent depth of 13.866mm. Based on the relationship between beam energy and Bragg peak position, the corresponding beam energy at the isocenter of the therapy terminal is evaluated to be 71.71MeV/u for the original 80.55MeV/u ¹²C ion beam, which consisted basically with calculation. The readout of the previously-used air-free ionization chamber regarding absorbed dose is calibrated as well in this experiment. The results indicate that the performance of the therapy facility should be optimized further to meet the requirements of clinical trial.