Dosimetric comparison of surface mould HDR brachytherapy with VMAT
نویسندگان
چکیده
منابع مشابه
Dosimetric 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 ...
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PURPOSE The purpose of this study was to compare two inverse planning algorithms for cervical cancer brachytherapy and a conventional manual treatment planning according to the MUW (Medical University of Vienna) protocol. MATERIAL AND METHODS For 20 patients, manually optimized, and, inversely optimized treatment plans with Hybrid Inverse treatment Planning and Optimization (HIPO) and with In...
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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...
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This investigation studies the use of volumetric-modulated arc therapy (VMAT) to deliver the following conceptual gynecological brachytherapy (BT) dose distributions: Type 1, traditional pear-shaped dose distribution with substantial dose gradients; Type 2, homogeneous dose distribution throughout PTV (BT prescription volume); and Type 3, increased dose to PTV without organ-at-risk (OAR) overdo...
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ژورنال
عنوان ژورنال: Journal of Medical Radiation Sciences
سال: 2018
ISSN: 2051-3895
DOI: 10.1002/jmrs.301