نتایج جستجو برای: brachytherapy tg 43 formalism
تعداد نتایج: 156742 فیلتر نتایج به سال:
introduction: brachytherapy is one of the most common treatment modalities for gynecological cancer. the gzp6 brachytherapy system is one of the devices utilized in iran. it has been considered particularly due to its low cost compared to other more complete and established systems. this system has some deficiencies including lack of a treatment planning software for non-predefined treatments, ...
To the Editor, In the last decade, the number of low-energy photonemitting brachytherapy source manufacturers has dramatically grown, and there are now about 15 manufacturers for I and Pd encapsulated sources for permanent and temporary brachytherapy. More recently, several third party calibration services, some based in commercial radiopharmacies, have begun marketing “independent assays” of b...
PURPOSE This article presents the American Brachytherapy Society (ABS) guidelines for the use of brachytherapy for patients with choroidal melanomas. METHODS Members of the ABS with expertise in choroidal melanoma formulated brachytherapy guidelines based upon their clinical experience and a review of the literature. The Board of Directors of the ABS approved the final report. RESULTS Episc...
It is of interest to discern the energy-dependence of American Association of Physicists in Medicine (AAPM) TG-43 brachytherapy dosimetry parameters. Using Monte Carlo calculation geometry and techniques (MCNP), dependence of these parameters was calculated as a function of photon energy, in general, and for the MED3633 103Pd source using a discretized approach. Results were weighted and summed...
Brachytherapy is one type of internal radiation therapy where radiation sources, which are usually encapsulated are placed as close as possible to the tumor site inside the patient's body. In this technique, it is important to determine dose distribution around the brachytherapy capsule. Hereby, in this paper, dosimetric parameters of I-125 brachytherapy source model 6711 are estimated accordin...
Accurate calculation of the absorbed dose delivered to tumor and normal tissues improves treatment gain factor, which is major advantage brachytherapy over external radiation therapy. To address simplifications TG-43 assumptions that ignore dosimetric impact medium heterogeneities, we proposed a deep learning (DL)-based approach, accuracy while requiring reasonable computation time. We develope...
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