Article ID: | iaor20033216 |
Country: | Netherlands |
Volume: | 119 |
Issue: | 1 |
Start Page Number: | 229 |
End Page Number: | 245 |
Publication Date: | Mar 2003 |
Journal: | Annals of Operations Research |
Authors: | Billups Stephen C., Kennedy Janine M. |
Keywords: | programming: linear |
Computer-generated plans for radiation treatment sometimes involve an unnecessarily large number of gantry angles. Such plans are time consuming and expensive to administer because each distinct angle causes a delay while the gantry is repositioned. To address this issue, we consider an optimization model that generates minimum-support solutions to the treatment planning problem – that is, solutions involving a minimum number of gantry angles. This model is a polyhedral concave program, which is solved using a successive linearization algorithm based on work by Mangasarian.