نتایج جستجو برای: external radiation therapy
تعداد نتایج: 1028893 فیلتر نتایج به سال:
BACKGROUND AND PURPOSE The impact of differences in the distribution of major cancer sites and stages at diagnosis among 4 European countries on the optimal utilization proportion (OUP) of patients who should receive external beam radiotherapy was assessed within the framework of the ESTRO-HERO project. MATERIALS AND METHODS Data from Australian Collaboration for Cancer Outcomes Research and ...
PURPOSE To determine the clinical and dosimetric factors that predict prostate-specific antygen (PSA) bouncing following brachytherapy HDR and three-dimensional conformal radiation therapy (3D-CRT) for prostate cancer patients. MATERIAL AND METHODS The evaluated population consisted of 121 prostate cancer patients with a minimum of 5 years of follow-up and at least 6 post-treatment PSA levels...
Task Group 154 (TG154) of the American Association of Physicists in Medicine (AAPM) was created to produce a guidance document for clinical medical physicists describing recommended quality assurance (QA) procedures for ultrasound (U.S.)-guided external beam radiotherapy localization. This report describes the relevant literature, state of the art, and briefly summarizes U.S. imaging physics. S...
The transfer of radiation therapy data among the various subsystems required for external beam treatments is subject to error. Hence, the establishment and management of a data transfer quality assurance program is strongly recommended. It should cover the QA of data transfers of patient specific treatments, imaging data, manually handled data and historical treatment records. QA of the databas...
In conclusion, although surgery remains the first choice to treat ROLC, a considerable number of patients are inoperable. EBRT is an alternative, but is hampered since the ROLC is effectively invisible. We report that the use of metallic clips placed during bronchoscopy can make ROLC visible for the radiation oncologist. The clips appear to be safe, well tolerated and removable in inoperable pa...
BACKGROUND AND PURPOSE We verified the propriety of our systematic error reduction strategy by means of a computer simulation based on our data of position error with a prone fixation device for prostate IMRT. MATERIALS AND METHODS Computer simulations of the off-line correction method for systematic setup errors based on the portal imaging taken on the first several days of the treatment ses...
PURPOSE To utilize the surveillance, epidemiology, and end results database to analyze whether there are racial or socioeconomic disparities associated with the selection of prostate brachytherapy. MATERIAL AND METHODS We selected patients who were diagnosed with localized prostate cancer between 2004-2006 and who underwent treatment with radiation. Data regarding race and estimates of socioe...
Background and Objective: Cancer-related fatigue is one of the most common side effects of breast cancer treatments. Humor therapy has a special role in alternative and complementary medicine. The aim of this study was to determine the effect of humor therapy on fatigue severity and quality of life in breast cancer patients undergoing external radiation therapy. Materials and Methods: This s...
Radiation-induced sarcoma is a rare complication of radiation therapy. We report a case of radiation-induced chondrosarcoma of the maxilla. An 80-year-old Persian woman developed radiation-induced chondrosarcoma of the left maxilla 7 years after combined chemotherapy and external beam radiation therapy for the Ann Arbor stage IE malignant lymphoma of the right tonsil. She underwent suboptimal t...
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