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Computer-assisted conformation radiotherapy with a variable thickness multi-leaf filter
H Kobayashi1, S Sakuma, O Kaii
1Department of Radiology, Nagoya University School of Medicine, Japan.
Abstract:
A new computer-assisted conformation radiotherapy with a variable thickness multi-leaf filter system was developed. Each wedgeshaped compensating filter (aluminum, tan theta = 0.1) travels against the movement of the ipsilateral leaf and according to defined parameters. By using our filter, a homogenous dose distribution in the target area was obtained and high-dose levels outside the target area decreased significantly.