نتایج جستجو برای: left sided breast cancer fb and dibh 3 dcrt plans
تعداد نتایج: 17423336 فیلتر نتایج به سال:
causes, mortality in women with left sided tumours did not differ significantly from that in women with right sided tumours. Most of the late cardiovascular deaths involved women treated for breast cancer in the 1970s, and improvements in radiotherapy techniques since then have tended to reduce radiation dose to the heart. For women treated in the 1980s, however, the cardiovascular ratio, left ...
Introduction :Today there is general awareness of the potential damage to the heart in left- sided (more than in rightsided) breast cancer radiotherapy. Material & Method: Historical changes in tumor and heart doses are presented here along with the impact of different RT techniques and volumes. Results: Individual and pharm...
بررسی تآثیر کورکومین بر بیان آکواپورین5 در سلول های سرطانی روده بزرگ انسان(ht-29) سرطان روده بزرگ جزو بیماری های خطرناک بوده و از نظر شیوع سومین سرطان شایع و دومین علت مرگ ومیر ناشی از سرطان در جهان محسوب می شود. خطرابتلا به این سرطان تحت تاثیر دو عامل محیطی وفاکتورهای ژنتیکی می باشد. آکواپورین ها، پروتئین های کانال آبی بوده که نقش مهمی را در انتقال آب در بافتهای اندوتلیالی و اپی تلیالی بر عهد...
OBJECTIVE Cardiac irradiation during left-sided breast radiotherapy may lead to deleterious cardiac side effects. Using image guided radiotherapy, it is possible to exclude the heart from treatment fields and monitor reproducibility of virtual simulation (VS) fields at treatment delivery using electronic portal imaging (EPI). Retrospectively, we evaluate the incidence of cardiac irradiation at ...
PURPOSE Blocks have been used to protect heart from potential radiation damage in left-sided breast treatments. Since cardiac motion pattern may not be fully captured on conventional 3DCT or 4DCT simulation scans, this study was intended to investigate the optimization of the heart block design taking the cardiac motion into consideration. MATERIALS AND METHODS Whole breast treatment plans us...
Abstract Background To investigate the beam complexity and monitor unit (MU) efficiency issues for two different volumetric modulated arc therapy (VMAT) delivery technologies patients with left-sided breast cancer (BC) nasopharyngeal carcinoma (NPC). Methods Twelve BC seven NPC cases were enrolled in this study. Each delivered treatment plan was optimized Pinnacle 3 planning system Auto-Plannin...
Introduction: Intensity Modulated Radiation Therapy (IMRT) planning dose calculation process depends on IMRT dose constraints. So, if there was any structure along the treatment beam path not delineated, it would not be taken into account during that calculation process. During IMRT routine practical work, it is noticed that there are some non-delineated normal tissue volumes that received un-a...
introduction:the external beam radiation therapy for patients with left breast cancer at the mastectomy site may cause myocardial perfusion abnormalities. we intended to study the change of these abnormalities at short and long term post radiotherapy follow up. methods: twenty patients with left and 20 patients with right breast cancer comprised the exposed and control groups, respectively. the...
Thousands of women diagnosed with breast cancer each year receive breast-conserving surgery followed by adjuvant radiation therapy. For women with left-sided breast cancer, there is risk of potential cardiotoxicity from the radiation therapy. As data have become available to quantify the risk of cardiotoxicity from radiation, strategies have also developed to reduce the dose of radiation to the...
background: idiopathic granulomatous mastitis (igm) is a rare benign breast disease, which can mimic breast cancer. as the managements of igm and breast cancer are entirely different and the initial clinical manifestations are similar in several cases, it is very important to differentiate them. case presentation: we reported a 48-year-old female patient with igm and breast cancer. she was refe...
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