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BACKGROUND High-precision radiation therapy techniques such as IMRT or sterotactic radiosurgery, delivers more complex treatment fields than conventional techniques. The increased complexity causes longer dose delivery times for each fraction. The purpose of this work is to explore the radiobiologic effect of prolonged fraction delivery time on tumor(More)
OBJECTIVE To evaluate the effectiveness and toxicities in T4 nasopharyngeal carcinoma (NPC) using intensity-modulated radiotherapy (IMRT) combined with chemotherapy. METHODS This is a retrospective analysis of 81 patients treated with intensity-modulated radiotherapy (IMRT). All the primary tumors were attributed to T4 stage according to the AJCC2010(More)
Intensity-modulated radiation therapy, when used in the clinic, prolongs fraction delivery time. Here we investigated both the in vivoand in vitroradiobiological effects on the A549 cell line, including the effect of different delivery times with the same dose on A549 tumor growth in nude mice. The in vitroeffects were studied with clonogenic assays, using(More)
AIM To evaluate the efficacy and safety of using nimotuzumab in combination with intensity-modulated radiotherapy (IMRT) in the primary treatment of locoregionally advanced nasopharyngeal carcinoma. METHODS Between December 2009 and December 2013, 38 newly diagnosed patients with stage III-IV nasopharyngeal carcinoma were treated with IMRT and nimotuzumab(More)
PURPOSE To study tumor regression and failure patterns in T1-T2 non-metastatic nasopharyngeal carcinoma (NPC) after intensity-modulated radiotherapy (IMRT). METHODS A retrospective analysis of 139 nasopharyngeal carcinoma patients treated with IMRT between January 2005 and December 2010 in our center was performed. According to the AJCC staging system,(More)
BACKGROUND To investigate the incidence and risk of severe late toxicity with concurrent chemoradiotherapy (CCRT) in nasopharyngeal carcinoma patients. METHODS Eligible studies included prospective randomized controlled trials (RCTs) evaluating CCRT versus radiotherapy alone in patients with nasopharyngeal carcinoma and in which data on severe late(More)
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