Capability Verification of the Beam Delivery System in the Superficially-Placed Tumor Therapy Terminal at HIRFL

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

Chinese Physics C> 2007, Vol. 31> Issue(7) : 655-659

Capability Verification of the Beam Delivery System in the Superficially-Placed 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：
The passive beam delivery system in the superficially-placed tumor therapy terminal at Heavy Ion Research Facility in Lanzhou (HIRFL), which includes two orthogonal dipole magnets as scanning system, a motor-driven energy degrader as range-shifter, series of ridge filters as range modulator and a multileaf collimator, is introduced in detail. The capacities of its important components and the whole system have been verified experimentally. The tests of the ridge filter for extending Bragg peak and the range shifter for energy adjustment show both work well. To examine the passive beam delivery system, a beam shaping experiment were carried out, simulating a three-dimensional (3D) conformal irradiation to a tumor. The encouraging experimental result confirms that 3D layer-stacking conformal irradiation can be performed by means of the passive system. The validation of the beam delivery system establishes a substantial basis for upcoming clinical trial for superficially-placed tumors with heavy ions in the therapy terminal at HIRFL.

References

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DAI Zhong-Ying, LI Qiang, XIAO Guo-Qing, JIN Xiao-Dong and YAN Zheng. Capability Verification of the Beam Delivery System in the Superficially-Placed Tumor Therapy Terminal at HIRFL[J]. Chinese Physics C, 2007, 31(7): 655-659.

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Received: 2006-10-16
Revised: 2006-11-14

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沈阳化工大学材料科学与工程学院沈阳 110142

Capability Verification of the Beam Delivery System in the Superficially-Placed Tumor Therapy Terminal at HIRFL

Corresponding author: DAI Zhong-Ying,

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

Received Date: 2006-10-16
Accepted Date: 2006-11-14
Available Online: 2007-07-05

Abstract: The passive beam delivery system in the superficially-placed tumor therapy terminal at Heavy Ion Research Facility in Lanzhou (HIRFL), which includes two orthogonal dipole magnets as scanning system, a motor-driven energy degrader as range-shifter, series of ridge filters as range modulator and a multileaf collimator, is introduced in detail. The capacities of its important components and the whole system have been verified experimentally. The tests of the ridge filter for extending Bragg peak and the range shifter for energy adjustment show both work well. To examine the passive beam delivery system, a beam shaping experiment were carried out, simulating a three-dimensional (3D) conformal irradiation to a tumor. The encouraging experimental result confirms that 3D layer-stacking conformal irradiation can be performed by means of the passive system. The validation of the beam delivery system establishes a substantial basis for upcoming clinical trial for superficially-placed tumors with heavy ions in the therapy terminal at HIRFL.