نتایج جستجو برای: system ct simulator radiotherapy pelvis cancer
تعداد نتایج: 3231764 فیلتر نتایج به سال:
background: much research has widely been conducted into thyroid hormones levels following radiotherapy for breast cancer. consequently, in this study, we evaluated to relate the rate of thyroid hormones levels with the dose distribution among breast cancer patients. material and methods: thirty patients were treated with 4-field breast cancer radiotherapy. the dose volume histograms, the volum...
background and aim: carcinoma of the uterine cervix is a significant cause of mortality because of malignancy in women. radiotherapy is a major treatment modality for invasive cervical cancer with good treatment outcome in early-stage patients. however, substantial treatment failures still occur in the advanced-stage patients. in this case report a long term follow up of a 58 years old woman wi...
abstractwe are reporting a 43-year-old female breast cancer case with a solitary metastatic adenocarcinoma in clivus. this patient with a stage ii (t1n1m0) breast cancer history has been followed for 7 years. modified radical mastectomy (mrm) and 6 courses chemotherapy with cmf (cyclophosphamide, metotrexate, 5fu) regimen were done for her at the time of diagnosis. also, she took tamoxifen twe...
PURPOSE [(18)F]Fluorodeoxyglucose positron emission tomography (FDG-PET)/computed tomography (CT) imaging may improve assessment of radiation response in patients with head and neck cancer, but it is not yet known for which patients this is most useful. We conducted a prospective trial to identify patient populations likely to benefit from the addition of functional imaging to the assessment of...
Primary bone lymphoma (PBL) is a relatively uncommon entity. However, involvement of the cranial vault is an unusual manifestation of aggressive non-Hodgkin's lymphoma. We report the case of a 42-year old immunocompetent woman who presented with an enlarging mass involving the right parietal bone. Magnetic resonance imaging (MRI) of the brain revealed an expansive tumor that affects the right p...
BACKGROUND This study determined the prognostic effects of immunohistochemical biomarkers and volumetric parameters predicting radiotherapy-based treatment in patients with p16-negative squamous cell carcinoma of the oropharynx or hypopharynx. RESULTS VEGF immunoreactivity > 2 and GLUT1 overexpression were prognostic factors for lower cause-specific survival. Moreover, both factors were assoc...
Purpose/Objectives: Cervical cancer patients with disease extending laterally into parametrial tissue often require interstitial trans-perineal implantation under general anesthesia and a hospital stay for brachytherapy treatments. A major disadvantage of intraoperative implantation is the lack of 3D image guidance during needle placement. Here, we describe real-time CT-guidance to allow inters...
This study explored which kinds of cancer are related to a higher incidence of subsequent myelodysplastic syndrome (MDS) after radiotherapy (RT) and chemotherapy (CT). We performed a nested case–control study by using data from the Taiwanese National Health Insurance (NHI) system. The case group PhD, Ji-An Liang, MD, and Chia-Hung Kao, MD multivariable logistic regression analysis was conducted...
Background: Human Resources in the health sector not only is the most crucial source in health providing but account for nearly three-quarters of the health sector's costs. The purpose of this study was to estimate the required Human Resources of the CT scan department of the Reza Radiotherapy-Oncology Center based on the workload indicator of staffing needs in 2019. Materials and Methods: Thi...
OBJECTIVE To evaluate the value of CT common rail technique for application in intensity-modulated radiotherapy for nasopharyngeal carcinoma (NPC). METHODS Twenty-seven NPC patients underwent Somatom CT scans using the Siemens CTVision system prior to the commencement of the radiotherapy sessions. The acquired CT images were registered with the planning CT images using the matching function o...
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