2001
DOI: 10.1118/1.1406518
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Minimizing the number of segments in a delivery sequence for intensity‐modulated radiation therapy with a multileaf collimator

Abstract: This paper proposes a sequencing algorithm for intensity-modulated radiation therapy with a multileaf collimator in the static mode. The algorithm aims to minimize the number of segments in a delivery sequence. For a machine with a long verification and recording overhead time (e.g., 15 s per segment), minimizing the number of segments is equivalent to minimizing the delivery time. The proposed new algorithm is based on checking numerous candidates for a segment and selecting the candidate that results in a re… Show more

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Cited by 65 publications
(66 citation statements)
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“…Most of the paper deals with the leaf setup time minimization problem. We note that setup time seems to dominate the treatment time in many cases [9]. First, we prove a "duality" relation between the setup time minimization problem and maximum partitioning of certain type of vectors.…”
Section: Introductionmentioning
confidence: 82%
See 1 more Smart Citation
“…Most of the paper deals with the leaf setup time minimization problem. We note that setup time seems to dominate the treatment time in many cases [9]. First, we prove a "duality" relation between the setup time minimization problem and maximum partitioning of certain type of vectors.…”
Section: Introductionmentioning
confidence: 82%
“…Radiation treatment design was considered extensively in the medical physics literature. (See, e.g., [6,5,9] and references therein.) Previous algorithmic analysis of the setup and beam-on minimization problems is quite limited.…”
Section: Introductionmentioning
confidence: 99%
“…Static IMRT methods are also used in common practice [2], [8], [12], [24]. In the static setting, only one 2-D tumor region TR is considered and the beam source does not move.…”
Section: Leaf Sequencing In Intensity-modulated Radiationmentioning
confidence: 99%
“…When the MLC leaves move to change from one BR j−1 to another BR j , the beam source is turned off. Since the overhead associated with turning the beam source on/off, moving leaves, and verification dominates the total treatment time [12], [24], it must be minimized. This gives rise to the 3-D static leaf sequencing (SLS) problem: Given a prescribed IMB S(·) on a 2-D tumor region TR, find k segments BR j on TR for the dose delivery, such that k is minimized.…”
Section: Leaf Sequencing In Intensity-modulated Radiationmentioning
confidence: 99%
See 1 more Smart Citation