نتایج جستجو برای: tangential radiotherapy
تعداد نتایج: 68946 فیلتر نتایج به سال:
PURPOSE In women with favorable early breast cancer treated by lumpectomy plus tamoxifen or anastrazole, it remains unclear whether whole breast radiotherapy is beneficial. METHODS AND MATERIAL Between January 1996 and June 2004, the Austrian Breast and Colorectal Cancer Study Group (ABCSG) randomly assigned 869 women to receive breast radiotherapy +/- boost (n = 414) or not (n = 417) after b...
AIMS New technology - specifically intensity-modulated radiotherapy (IMRT) - is now being applied to breast radiotherapy and a recent dosimetric analysis confirmed the advantages of IMRT over 'wedge-only' plans. Such application to everyday practice raises new issues and here we present the early experience of IMRT-based breast irradiation in a single centre. MATERIALS AND METHODS We present ...
Pseudoaneurysm is a pulsating hematoma that results from a tangential injury to an arterial vessel wall and could represent a complication after trauma. In head and neck region pseudoaneurysm is rare but could have catastrophic consequences. For this reason it must be recognized to prevent such events as hemorrhage or acute occlusion of the airway. In literature a pseudoaneurysm arising from su...
Breath-holding techniques reduce the amount of radiation received by cardiac structures during tangential-field left breast radiotherapy. With these techniques, patients hold their breath while radiotherapy is delivered, pushing the heart down and away from the radiotherapy field. Despite clear dosimetric benefits, these techniques are not yet in widespread use. One reason for this is that comm...
mainstay of treatment for patients with breast cancer and lung cancer, and also patients with metastatic prostate cancer sometimes undergo taxane chemotherapy. Taxanes may also act as radiation enhancers. Paclitaxel interferes with the mitotic spindle function by enhancing the rate and yield of microtubule assembly and preventing microtubule polymerization. This interference results in the arre...
PURPOSE To develop an automated beam placement technique for whole breast radiotherapy using tangential beams. We seek to find optimal parameters for tangential beams to cover the whole ipsilateral breast (WB) and minimize the dose to the organs at risk (OARs). METHODS A support vector machine (SVM) based method is proposed to determine the optimal posterior plane of the tangential beams. Rel...
Introduction: To enhance radiation therapy efficiency it is crucial to implement an individual-based treatment. The aim of present study was to identify the mechanism of intrinsic apoptosis pathway on radiosensitivity and normal tissue complications caused by the radiotherapy. Materials and Methods: radiation-induced apoptosis in periphera...
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