Evaluation of a leaf position optimization tool for intensity modulated radiation therapy of head and neck cancer
Claus, Filip × De Gersem, W Vanhoutte, I Duthoy, W Remouchamps, V De Wagter, C De Neve, W #
Elsevier sci ireland ltd
Radiotherapy and oncology vol:61 issue:3 pages:281-286
Background and purpose: Since 1996, patients are treated at Ghent University Hospital with a multi-segment technique using MultiLeaf Collimators. The segments were obtained by using the Beam's eye view projections of the planning target volume (PTV) and the organs at risk (OARs), after which the segments weights were optimized. To investigate if optimization of the leaf positions would further improve the intensity modulated radiation therapy (IMRT) plans, a tool optimizing leaf positions and segment weights simultaneously, was developed. This tool is called SOWAT, which is the acronym for segment outline and weight adapting tool.