dc.contributor.author | Mirzapourrezaei, Seyedali | |
dc.contributor.author | Salari, Ehsan | |
dc.date.accessioned | 2018-03-26T20:01:32Z | |
dc.date.available | 2018-03-26T20:01:32Z | |
dc.date.issued | 2017-06-14 | |
dc.identifier.citation | Mirzapourrezaei, Seyedali; Salari, Ehsan. 2017. Bidirectional leaf trajectory optimization approaches for dynamic delivery of intensity-modulated radiotherapy plans. Medical Physics, vol. 44:no. 6:pp 3205-3206 | en_US |
dc.identifier.issn | 0094-2405 | |
dc.identifier.other | WOS:000426452604140 | |
dc.identifier.uri | https://aapm.onlinelibrary.wiley.com/doi/10.1002/mp.12304 | |
dc.identifier.uri | http://hdl.handle.net/10057/14725 | |
dc.description | Click on the URL to access the article (may not be free). | en_US |
dc.description.abstract | Purpose: Traditionally, unidirectional leaf-sweeping schemes have beenused for dynamic deliver y of intensity-modulated radiotherapy (IMRT) plans.This research investigates the potential benefits of bidirectional MLC-leaftrajectories to delivery efficiency and beam-modulation quality particularlywhen the available beam-on time is limited. Methods: This research relaxesthe unidirectional leaf-motion restriction and develops exact and heuristicleaf-sequencing approaches to obtain optimal bidirectional leaf trajectories.In par ticular, the proposed exact and heuristic approaches allow the MLCleaves to start from an arbitrary or pre-specified initial position and movefreely across the radiation field to modulate the desired fluence map. Theexact approach employs mixed-integer programming techniques to solve thearising non-convex optimization problem to a guaranteed optimality gap. Theheuristic methods exploit the special structure of the problem to obtain near-Medical Physics, 44 (6), June 20173205 2017 AAPM Annual Meeting Program 3205
optimal leaf trajectories, while requiring a significantly smaller computa-tional effort. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | WILEY | en_US |
dc.relation.ispartofseries | Medical Physics;v.44:no.6 | |
dc.title | Bidirectional leaf trajectory optimization approaches for dynamic delivery of intensity-modulated radiotherapy plans | en_US |
dc.type | Abstract | en_US |
dc.rights.holder | © 2017 American Association of Physicists in Medicine | en_US |