A fast multitarget inverse treatment planning strategy optimizing dosimetric measures for high‐dose‐rate (HDR) brachytherapy
A fast multitarget inverse treatment planning strategy optimizing dosimetric measures for high‐dose‐rate (HDR) brachytherapy
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一种快速多目标逆向治疗计划策略,优化高剂量率 (HDR) 近距离放射治疗的剂量测量
DOI:
10.1002/mp.12410
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发表时间:
2017
期刊:
影响因子:
3.8
通讯作者:
Cormack
中科院分区:
文献类型:
--
作者:
Guthier;Damato;Viswanathan;Hesser;Cormack
PurposeIn this study, we introduce a novel, fast, inverse treatment planning strategy for interstitial high‐dose‐rate (HDR) brachytherapy with multiple regions of interest solely based on dose‐volume‐histogram‐related dosimetric measures (DMs).MethodsWe present a new problem formulation of the objective function that approximates the indicator variables of the standard DM optimization problem with a smooth logistic function. This problem is optimized by standard gradient‐based methods. The proposed approach is then compared against state‐of‐the‐art optimization strategies.ResultsAll generated plans fulfilled prescribed DMs for all organs at risk. Compared to clinical practice, a statistically significant improvement in coverage of target structures was achieved. Simultaneously, DMs representing high‐dose regions were significantly reduced . The novel optimization strategies run‐time was (0.8 ± 0.3) s and thus outperformed the best competing strategies of the state of the art. In addition, the novel DM‐based approach was associated with a statistically significant increase in the number of active dwell positions and a decrease in the maximum dwell time.ConclusionsThe generated plans showed a clinically significant increase in target coverage with fewer hot spots, with an optimization time approximately three orders of magnitude shorter than manual optimization currently used in clinical practice. As optimization is solely based on DMs, intuitive, interactive, real‐time treatment planning, which motivated the adoption of manual optimization in our clinic, is possible.
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影响因子:
1.4
作者:
P. Mavroidis;Z. Katsilieri;V. Kefala;N. Milickovic;N. Papanikolaou;A. Karabis;N. Zamboglou;D. Baltas
通讯作者:
D. Baltas
影响因子:
3.8
作者:
M. Lahanas;D. Baltas;S. Giannouli;N. Milickovic;N. Zamboglou
通讯作者:
N. Zamboglou
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
É. Lessard
通讯作者:
É. Lessard
影响因子:
1.9
作者:
R. Stock
通讯作者:
R. Stock
影响因子:
1.9
作者:
Dinkla, Anna M.;van der Laarse, Rob;Bel, Arjan
通讯作者:
Bel, Arjan