نتایج جستجو برای: diagnosis of brain tumor
تعداد نتایج: 21291769 فیلتر نتایج به سال:
Pan-hypopituitarism is a rare but life threatening disorder that occurs due to reduction of anterior pituitary hormones. In this condition, major depressive disorders are presented by depressed mood and markedly diminished interest in many activities during a day. Some disorders are associated with psychiatric symptoms at presentation, therefore, the diagnosis of mood disorder due to a medical ...
Background & Aims: Although the guidelines for the diagnosis of brain death are well established, further confirmatory tests are required. Performing these tests need high costs, specialized personnel and technology, transportation of patients out of the intensive care unit, and use of contrast. The Bispectral Index (BIS) can provide objective and continuous monitoring of the consciousness leve...
Many studies have been focused on cytogenetic and molecular genetic defects in brain tumors; therefore the role of ATM as a tumor suppressor gene in these tumors is poorly considered. In this study mutation analysis of exon 19 and 39 of ATM gene and P53 accumulation were investigated by PCR-SSCP, sequencing, and flow cytometry . Four polymorphisms including D1853N, IVS 38-8 T?C, F858L, P872T we...
Background: One of the leading causes of death is brain tumors. Accurate tumor classification leads to appropriate decision making and providing the most efficient treatment to the patients. This study aims to optimize brain tumor MR images classification accuracy using optimal threshold, PCA and training Adaptive Neuro Fuzzy Inference System (ANFIS) with different repetitions.Material and Meth...
Abstract BACKGROUND Differentiating neoplastic and non-neoplastic brain lesions is essential to make management recommendations convey prognosis, but the distinction between tumors their mimics in practice may prove challenging. The aim of this study provide incidence tumor neuro-oncology setting describe patient subset. METHODS Retrospective adult patients referred Division Neuro-oncology for ...
The brain tumor is abnormal growth of cells inside skull which causes damage of the other cells necessary for functioning human brain. The brain tumor detection is challenging task due to complex structure of human brain. MRI images generated from MRI scanners using strong magnetic fields and radio waves to form images of the body which helps for medical diagnosis. This paper gives the overview...
Background: Meningiomas are among the most common tumors of the brain. Skull base meningiomas comprise s major part of brain meningiomas. They are difficult to treat because of proximity to major vital neuro-vascular structures which makes their surgical resection hazardous and fraught with a high rate of complications. Radiosurgery is considered as an alternative efficient ...
The goals of the present study were to analyze the accuracy of cytological techniques for the intra-operative diagnosis of central nervous system tumors. In this study, 50 patients with brain or spinal tumor (according to the previous physical examination and imaging studies) were evaluated in the neurosurgery center of Hazrat Rasoul-e-Akram Hospital. Cytological methods including touch, sc...
MRI plays a vital role to evaluate brain tumor diagnosis and treatment planning. However, the manual segmentation of image is strenuous. With development deep learning, large number automatic methods have been developed, but most them stay in 2D images, which leads subpar performance. Aiming at segmenting 3D MRI, we propose model for with multiple encoders. Our reduces difficulty feature extrac...
Primary malignant brain tumors account for 2 percent of all cancers in U.S. adults. The most common malignant brain tumor is glioblastoma multiforme, and patients with this type of tumor have a poor prognosis. Previous exposure to high-dose ionizing radiation is the only proven environmental risk factor for a brain tumor. Primary brain tumors are classified based on their cellular origin and hi...
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