PO-0823: Hierarchical constrained optimization for automated SBRT paraspinal IMRT planning
نویسندگان
چکیده
منابع مشابه
Reduced-order constrained optimization in IMRT planning.
This paper presents a new algorithm for constrained intensity-modulated radiotherapy (IMRT) planning, made tractable by a dimensionality reduction using a set of plans obtained by fast, unconstrained optimizations. The main result is to reduce planning time by an order of magnitude, producing viable five field prostate IMRT plans in about 5 min. Broadly, the algorithm has three steps. First, we...
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Intensity-modulated radiation therapy (IMRT) has become a standard technique in radiation therapy for treating different types of cancers. Various class solutions have been developed for simple cases (e.g., localized prostate, whole breast) to generate IMRT plans efficiently. However, for more complex cases (e.g., head and neck, pelvic nodes), it can be time-consuming for a planner to generate ...
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All inverse planning involves weight optimization. Beamlet-based Inverse Planning (BBIP) irradiates complex target volumes with a large number of small beams. The number of small beams or beamlets is often more than one thousand. The optimization process adjusts the weights of these beams to produce a desired dose distribution. Delivery of this large number of small beams is challenging, but ma...
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PURPOSE The current inverse planning methods for intensity modulated radiation therapy (IMRT) are limited because they are not designed to explore the trade-offs between the competing objectives of tumor and normal tissues. The goal was to develop an efficient multiobjective optimization algorithm that was flexible enough to handle any form of objective function and that resulted in a set of Pa...
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2017
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(17)31260-4