Conformal Irradiation to Moving Targets in Heavy Ion Radiotherapy with Raster-Scanning Beam Delivery System: (II) Feasibility Experiments

LI Qiang

Chinese Physics C> 2006, Vol. 30> Issue(9) : 925-929

Conformal Irradiation to Moving Targets in Heavy Ion Radiotherapy with Raster-Scanning Beam Delivery System: (II) Feasibility Experiments

LI Qiang ^,

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 German Heavy-ion Research Center GSI, Darmstadt 64291, Germany

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Abstract：
Within the framework of the pilot heavy-ion therapy facility at GSI equipped with an active beam delivery system of advanced raster scanning technique, a feasibility study on actively conformal heavy-ion irradiation to moving tumors has been experimentally conducted. Laterally, real-time corrections to the beam scanning parameters by the raster scanner, leading to an active beam tracing, compensate for the lateral motion of a target volume. Longitudinally, a mechanically driven wedge energy degrader (called depth scanner) is applied to adjust the beam energy so as to locate the high-dose Bragg peak of heavy ion beam to the slice under treatment for the moving target volume. It has been experimentally shown that compensations for lateral target motion by the raster scanner and longitudinal target shift by the depth scanner are feasible.

References

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LI Qiang. Conformal Irradiation to Moving Targets in Heavy Ion Radiotherapy with Raster-Scanning Beam Delivery System: (II) Feasibility Experiments[J]. Chinese Physics C, 2006, 30(9): 925-929.

LI Qiang. Conformal Irradiation to Moving Targets in Heavy Ion Radiotherapy with Raster-Scanning Beam Delivery System: (II) Feasibility Experiments[J]. Chinese Physics C, 2006, 30(9): 925-929. shu

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Received: 2005-12-17
Revised: 2006-01-20

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Conformal Irradiation to Moving Targets in Heavy Ion Radiotherapy with Raster-Scanning Beam Delivery System: (II) Feasibility Experiments

Corresponding author: LI Qiang,

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 German Heavy-ion Research Center GSI, Darmstadt 64291, Germany

Received Date: 2005-12-17

Accepted Date: 2006-01-20

Available Online: 2006-09-05

Abstract: Within the framework of the pilot heavy-ion therapy facility at GSI equipped with an active beam delivery system of advanced raster scanning technique, a feasibility study on actively conformal heavy-ion irradiation to moving tumors has been experimentally conducted. Laterally, real-time corrections to the beam scanning parameters by the raster scanner, leading to an active beam tracing, compensate for the lateral motion of a target volume. Longitudinally, a mechanically driven wedge energy degrader (called depth scanner) is applied to adjust the beam energy so as to locate the high-dose Bragg peak of heavy ion beam to the slice under treatment for the moving target volume. It has been experimentally shown that compensations for lateral target motion by the raster scanner and longitudinal target shift by the depth scanner are feasible.

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Conformal Irradiation to Moving Targets in Heavy Ion Radiotherapy with Raster-Scanning Beam Delivery System: (II) Feasibility Experiments

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