نتایج جستجو برای: external radiation
تعداد نتایج: 420496 فیلتر نتایج به سال:
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...
Littoral (lake shore) macroinvertebrate communities were studied in eight natural lakes affected by fallout from the Chernobyl accident. The lakes spanned a range in (137)Cs contamination from 100 to 15500 kBq m(-2) and estimated external dose rates ranged from 0.13 to 30.7 μGy h(-1). General linear models were used to assess whether abundance of individuals, taxon richness, Berger-Parker domin...
1 Department of Biostatistics, University of Michigan, Ann Arbor, MI Department of Radiation Oncology, University, of Michigan, Ann Arbor, MI Division of Radiation Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia Departments of Urology and Epidemiology and Biostatistics, University of Texas Health Science Center at San Antonio, San Antonio, TX William Beaumont Hospital, R...
Radiolabeled antibodies are analyzed from the classical approach in radiation oncology being compared to geometric isotopic implants, external radiation, and tumor-dose response and energy of the isotope used for cytotoxicity. In addition, physiological factors that limit antibody uptake, varied routes of administration, toxicity of treatment, as well as present clinical progress are reviewed.
PURPOSE Health-related quality-of-life (HRQOL) concerns are pivotal in choosing prostate cancer therapy. However, concurrent HRQOL comparison between brachytherapy, external radiation, radical prostatectomy, and controls is hitherto lacking. HRQOL effects of hormonal adjuvants and of cancer control after therapy also lack prior characterization. PATIENTS AND METHODS A cross-sectional survey w...
Task Group 101 of the AAPM has prepared this report for medical physicists, clinicians, and therapists in order to outline the best practice guidelines for the external-beam radiation therapy technique referred to as stereotactic body radiation therapy (SBRT). The task group report includes a review of the literature to identify reported clinical findings and expected outcomes for this treatmen...
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