Thomas Kalinowski

An algorithm for optimal multileaf collimator field segmentation with interleaf collision constraint 2

University of Rostock, Institute of Mathematics, 2003

https://doi.org/10.18453/rosdok_id00005906

Abstract: Multileaf collimators are widely used in radiotherapy to realize intensity modulated fields as superpositions of homogeneous fields, so called segments. One important step in the planning process is the decomposition of the modulated field into a small number of segments such that the total number of monitor units is also small. In this paper we present an algorithm that is based on the results of [6] and constructs a segmentation with minimal total number of monitor units and a small number of segments, taking into account a machine–dependent constraint, that forbids leaf overtravel in adjacent rows of the multileaf collimator.

working paper   free access