نتایج جستجو برای: volumetric radiation
تعداد نتایج: 260921 فیلتر نتایج به سال:
We describe PerspectaRAD, the first tool for the review and modification of external-beam radiation therapy treatment plans with a volumetric three-dimensional display (Perspecta 1.9, Actuality Medical, Bedford, MA, USA) and a dedicated software application (PerspectaRAD, Actuality Medical). We summarize multi-institution retrospective studies that compare the system’s efficacy to the incumbent...
Radiation characteristics of fused quartz containing bubbles (10 % porosity) are determined using inverse method based on theoretical and experimental bi-directional transmittances and reflectances. The Discrete Ordinates Method is used to solve the RTE. The internal and external interfaces are assumed to be optically smooth. The importance of the choice of the interpolation law has been shown,...
Advancement in treatment delivery techniques in external beam radiation therapy has significantly improved the conformal radiation dose distributions to the tumor while reducing dose to the critical structures. Modern treatment techniques combined with sophisticated treatment planning systems have led to increase in the treatment planning studies in the recent years. In this article, we review ...
PURPOSE To survey image guided radiation therapy (IGRT) practice patterns, as well as IGRT's impact on clinical workflow and planning treatment volumes (PTVs). METHODS AND MATERIALS A sample of 5979 treatment site-specific surveys was e-mailed to the membership of the American Society for Radiation Oncology (ASTRO), with questions pertaining to IGRT modality/frequency, PTV expansions, method ...
Submit Manuscript | http://medcraveonline.com Abbreviations: TCP: Tumor Control Probability; NTCP: Normal Tissue Control Probability; LKB: Lyman Kutcher Burman; IGRT: Image Guided Radiation Therapy; IMRT: Intensity Modulated Radiation Therapy; SIB-IMRT: Simultaneous Integrated BoostIMRT; VMAT: Volumetric Modulated Arc Therapy; DA: Double Arc; SA: Single Arc; HT: Helical Tomotherapy; IFP: Improv...
Intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) are state-of-the-art irradiation techniques for the delivery of highly conformal radiation fields to the target volume. These techniques require complex treatment planning system (TPS) algorithms as well as sophisticated irradiation methods. As a result, the use of quality assurance tools for the verificati...
BACKGROUND Conventional phantom-based planar dosimetry (2D-PBD) quality assurance (QA) using gamma pass rate (GP (%)) is inadequate to reflect clinically relevant dose error in intensity-modulated radiation therapy (IMRT), owing to a lack of information regarding patient anatomy and volumetric dose distribution. This study aimed to evaluate the dose distribution accuracy of IMRT delivery for na...
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