摘要
The clinical trials of tumor therapy using heavy ions beam 12C are now in progress at Institute of Modern Physics in Lanzhou. In order to achieve the precise radiotherapy with the high energy 12C beam in active pencil beam scanning mode, we have developed an ionization chamber(IC) as an online monitor for beam intensity and also a dosimeter after calibration. Through the choosing of working gas and voltage, optimizing of the electrics and the read-out system, calibrating the linearity, the detector system provide us one of the simple and highly reliable way to monitoring the beam during the active pencil beam scanning treatments. The measurement results of this detector system show that it could work well under the condition of high energy 12C beam in active pencil beam scanning mode.
The clinical trials of tumor therapy using heavy ions beam ^12C are now in progress at Institute of Modern Physics in Lanzhou. In order to achieve the precise radiotherapy with the high energy ^12C beam in active pencil beam scanning mode, we have developed an ionization chamber（IC） as an online monitor for beam intensity and also a dosirneter after calibration. Through the choosing of working gas and voltage, optimizing of the electrics and the read-out system, calibrating the linearity, the detector system provide us one of the simple and highly reliable way to monitoring the beam during the active pencil beam scanning treatments. The measurement results of this detector system show that it could work well under the condition of high energy ^12C beam in active pencil beam scanning mode.
基金
Supported by the National Nature Science Foundation of China (No. 10305015, No.10475098)
the Major Program of the Chinese Academy of Science (No. O701050YZD)
关键词
肿瘤
治疗
临床
离子化
粒子
Heavy ion beam therapy, Integral ionization chamber, Irradiation dose, Absorb dose
