منابع مشابه
Image-guided prostate radiotherapy: analysis of inter- fractional setup errors
Introduction: The accuracy of the patient setup and tumor location are major factors that determine the efficacy of radiotherapy treatment planning. In the prostate radiotherapy, reproducibility of the prostate location for each treatment fraction is problematic owing to varying filling of the rectum and bladder. According to this, the aim of this study was to measure the inte...
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Volumetric imaging and planning for 3-dimensional (3D) conformal radiotherapy and intensity-modulated radiotherapy (IMRT) have highlighted the need to the oncology community to better understand the geometric uncertainties inherent in the radiotherapy delivery process, including setup error (interfraction) as well as organ motion during treatment (intrafraction). This has ushered in the develop...
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During most of the last century, verification of patient position on the radiotherapy treatment table was considered adequate if exposed on a photographic film by a megavoltage beam. It was a general standard to expose such a film once a week, to be approved by a radiation oncologist. The latter approved it after comparison to a kilovoltage simulation film exposed at the time of initial setup o...
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Esophageal cancer is the eighth most common malignancy worldwide, with more than 480,000 new patients diagnosed annually. The incidence of esophageal adenocarcinoma is increasing, whereas the incidence of squamous cell carcinoma has not changed. According to the Surveillance, Epidemiology and End Results (SEER) statistics, the 5-year survival rate for esophageal carcinoma based on stage at diag...
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Recently, with the advent of linear accelerators equipped with on-board x-ray images and advanced imaging technologies, image-guided radiotherapy (IGRT) has gained worldwide momentum in the radio therapeutic management of cancers in terms of volumetric information-based accurate tumor localization, real-time patient setup and margin reduction [1,2]. The involved technologies include digital rad...
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ژورنال
عنوان ژورنال: Deutsches Aerzteblatt Online
سال: 2011
ISSN: 1866-0452
DOI: 10.3238/arztebl.2011.0274