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KMID : 0357520130360020157
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Journal of Radiological Science and Technology
2013 Volume.36 No. 2 p.157 ~ p.163
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3D Stacked Radiation Collimator
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Yoon Dok-Un
Lee Tae-Woong
Lee Won-Ho
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Abstract
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Multileaf collimators whose Pb leaves are moving in two-dimensional directions have been used. We propose a different concept three-dimensional (3D) collimator with 3D shape that is automatically changeable to modulate the radiation dose even for complex tumors in real time. A voxel collimator, including a hinged Pb plane and a 3D assembly of many voxel collimators, was used. In each frame rotation axis, a motor, which was controlled by a circuit with field-programmable gate array (FPGA) board connected with computer, was operated according to a predetermined plan. Simulations of that, which are generally used for planning, were performed and compared with experimental results.
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KEYWORD
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3D assembly of many voxel collimators, three-dimensional collimatorFPGA
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