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- W2492166369 abstract "The aim of a radiotherapy treatment planning (RTP) system is to determine clinically acceptable dose distributions prior to the physical delivery of the treatment. It has been seen in Chap. 2 that present day RTP systems offer the possibility to make use of three dimensional (3-D) information to determine clinically acceptable plans. However there is not yet a RTP system that offers optimisation algorithms to determine automatically optimal 3-D treatment plans. One of the main reasons is that the algorithms developed to date are still too slow to operate in the demanding clinical environment in a cost effective manner. This is due to the fact that in general the algorithms are required to perform many hundreds if not thousands of iterations which are highly computer intensive due to the complexity of evaluating a 3-D dose distribution with a full 3-D beam model. As a consequence most of the optimisation algorithms developed have used simplified beam models to perform most of the optimisation. Such optimisation is carried out prior to the implementation of an optimised solution into a system with a full 3-D beam model. This principle has been adopted within the Peacock RTP software of NOMOS Corporation, in which use is made of the filtered back-projection algorithm developed by Holmes et. al. [8, 71, 74, 76, 99]. Essentially, a starting point to the optimisation in [99] is initially determined, with subsequent refinements being obtained through the use of simulated annealing (SA) together with a more sophisticated beam model." @default.
- W2492166369 created "2016-08-23" @default.
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- W2492166369 date "1999-01-01" @default.
- W2492166369 modified "2023-09-23" @default.
- W2492166369 title "Beam Characteristics and Preliminary Modelling Considerations" @default.
- W2492166369 doi "https://doi.org/10.1007/978-1-4471-0821-4_2" @default.
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