Konrad Engel
A new algorithm for optimal multileaf collimator field segmentation
Preprint series: Preprints aus dem Fachbereich Mathematik, Universität Rostock
92C50 Medical applications (general)
90C27 Combinatorial optimization
Abstract: We present a new efficient leaf sequencing algorithm for the
generation of intensity maps by a nonnegative combination of
segments. Intensity maps describe the intensity modulation of
beams in radiotherapy. We only study the static case (stop and
shoot) an optimize the total number of monitor units and the
number of segments. We will present a short exact proof for a
formula giving the smallest total number of monitor units and
describe a class of algorithms yielding this minimal value. A
special member of this class provides in addition a solution with a very small number of segments.
Keywords: leaf sequencing, radiation therapy optimization, intensity modulation, multileaf collimator, IMRT