EP-2140 HDR Brachytherapy in Reirradiation of Local Nasopharyngeal Recurrence
نویسندگان
چکیده
منابع مشابه
Brachytherapy in Reirradiation of Locally Recurrent Nasopharyngeal Cancer: Case Report
Results: The median age was 49 years, all were male, four patients had World Health Organization Class III histology, and one with nasopharyx cancer type I. Two, 1 and 2 patients had recurrent Stage I, II, III, respectively. Median time to reirradiation was 49 months. Four patients received combined-modality treatment, consisting of external beam radiotherapy (EBRT) with chemotherapy followed b...
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Introduction: In brachytherapy, as in external radiotherapy, image-guidance plays an important role. For GYN treatments it is standard to acquire at least CT images and preferably MR images prior to each treatment and to calculate the dose of the day on each set of images. Then, the dose to the target and to the organs at risk (OAR) is calculated with worst case scenario from I...
متن کاملEP-1230: Optimizing HDR brachytherapy dose distributions with respect to dosimetric indices and homogenei
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...
متن کاملPractical considerations for prostate HDR brachytherapy.
PURPOSE A process for prostate high-dose-rate (HDR) brachytherapy was developed and implemented successfully in the community hospital setting. The practical aspects of the program are reviewed and may serve as a foundation for clinics interested in offering this clinical service. METHODS AND MATERIALS A generic needle distribution geometry was established to accommodate target volumes of var...
متن کاملVital role of volume and number of needles in HDR brachytherapy (HDR-BT) of prostate cancer
PURPOSE The quality of HDR-BT of prostate cancer depends on operator skills, anatomy, prostate volume and relation to surrounding tissues as well as previous diseases and treatments of a patient. There is a rare data available concerning the minimum number of needles and its influence on dose distribution, side effects and long-term outcome. The study is to determine the minimal prostate volume...
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2019
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(19)32560-5