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3D Stacked Radiation Collimator  

Yoon, Dok-Un (Department of Health Science, Radiologic Science, Korea University)
Lee, Tae-Woong (Department of Health Science, Radiologic Science, Korea University)
Lee, Won-Ho (Department of Health Science, Radiologic Science, Korea University)
Publication Information
Journal of radiological science and technology / v.36, no.2, 2013 , pp. 157-163 More about this Journal
Abstract
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.
Keywords
3D assembly of many voxel collimators; three-dimensional collimator; FPGA;
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