OC-0395 Bi-objective optimization of dosimetric indices for HDR prostate brachytherapy within 30 seconds
نویسندگان
چکیده
منابع مشابه
IPIP: A new approach to inverse planning for HDR brachytherapy by directly optimizing dosimetric indices.
PURPOSE Many planning methods for high dose rate (HDR) brachytherapy require an iterative approach. A set of computational parameters are hypothesized that will give a dose plan that meets dosimetric criteria. A dose plan is computed using these parameters, and if any dosimetric criteria are not met, the process is iterated until a suitable dose plan is found. In this way, the dose distribution...
متن کاملPractical considerations for prostate HDR brachytherapy.
PURPOSE A process for prostate high-dose-rate (HDR) brachytherapy was developed and implemented successfully in the community hospital setting. The practical aspects of the program are reviewed and may serve as a foundation for clinics interested in offering this clinical service. METHODS AND MATERIALS A generic needle distribution geometry was established to accommodate target volumes of var...
متن کاملEP-1230: Optimizing HDR brachytherapy dose distributions with respect to dosimetric indices and homogenei
Figure shows the absolute change in the Dmean for the anal sphincter (left y-axis) and relative change in the V64Gy for the rectal wall (right y-axis) expressed as a function of the relative increase in the homogeneity index HI of the dose distribution in the PTV. Conclusions: By increasing the inhomogeneity of the targeted dose to the PTV in prostate RT plans the dose delivered to the rectal w...
متن کاملDosimetric equivalence of nonstandard HDR brachytherapy catheter patterns.
PURPOSE To determine whether alternative high dose rate prostate brachytherapy catheter patterns can result in similar or improved dose distributions while providing better access and reducing trauma. MATERIALS AND METHODS Standard prostate cancer high dose rate brachytherapy uses a regular grid of parallel needle positions to guide the catheter insertion. This geometry does not easily allow ...
متن کاملComparison of IPSA and HIPO inverse planning optimization algorithms for prostate HDR brachytherapy
Publications have reported the benefits of using high-dose-rate brachytherapy (HDRB) for the treatment of prostate cancer, since it provides similar biochemical control as other treatments while showing lowest long-term complications to the organs at risk (OAR). With the inclusion of anatomy-based inverse planning opti- mizers, HDRB has the advantage of potentially allowing dose escalation. Amo...
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2019
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(19)30815-1