نتایج جستجو برای: brain tumors

تعداد نتایج: 633884  

Journal: :Complex & Intelligent Systems 2021

Abstract Brain tumor occurs owing to uncontrolled and rapid growth of cells. If not treated at an initial phase, it may lead death. Despite many significant efforts promising outcomes in this domain, accurate segmentation classification remain a challenging task. A major challenge for brain detection arises from the variations location, shape, size. The objective survey is deliver comprehensive...

Boron neutron capture therapy (BNCT) is an effective method for treatment of deep seated brain tumors. This method consists of two stages: injection of boron compound in the patient body, and then irradiation of the region tumors with the neutron beam. It allows for delivery of high linear energy transfer (LET) radiation (particles 4He and 7Li nuclei) to tumors at the cellular level whilst avoi...

Journal: :acta medica iranica 0
zinat miabi department of radiology, school of medicine, tabriz university of medical sciences, tabriz, iran.

a set of one hundred and twenty nine patients with known primary malignancy and suspected brain metastasis was reviewed in present study. the patients were selected among patients presented to the mri section of imam khomeini hospital or a private mri center in tabriz (iran). primary tumor site, clinical manifestations, number and site of lesions were identified in this patient population. the ...

Journal: :Neuro-oncology 2022

Abstract TTFields are an anti-mitotic technique used to treat solid tumors by delivering low-intensity (1–4 V/cm) alternating electric fields the tumor, with frequencies between 100–500 kHz. This modality is FDA-approved for treating glioblastoma (GBM). Administration of conducted using two pairs transducer arrays placed on patient’s scalp. The layouts a key factor in determining field distribu...

Journal: :Molecular therapy. Nucleic acids 2021

Brain tumors are common solid pediatric malignancies and the main reason for cancer-related death in setting. Recently, evidence has revealed that noncoding RNAs (ncRNAs), including microRNAs (miRNAs), long ncRNAs (lncRNAs), circular (circRNAs), play a critical role brain tumor development progression. Therefore, this review article, we describe functions molecular mechanisms of multiple types ...

Journal: :International journal of engineering technology and management sciences 2023

A Brain tumor is a growth of cells in the brain or near it. tumors can happen tissue close by locations include nerves, pituitary gland, central nervous system , meninges and membranes that cover surface brain[1]. glioma forms spinal cord makes an appearance from glial stem progenitor cells. Glial are type cell generally present system. Gliomas predominantly occur and, rarely, cord. They grow a...

Journal: :Journal of Education, Health and Sport 2021

Brain tumors cause widespread apprehension in society, associated with poor prognosis and death. Laymen most often associate them glioblastoma multiforme which is fact the common malignant primary brain tumor (formerly it was considered tumor, now thought that meningiomas are common). The interest of both public physicians aroused by potential risk factors. only evidence based factor ionizing r...

Journal: :Applied Artificial Intelligence 2022

Brain tumors are deadly but become deadliest because of delayed and inefficient diagnosis process. Large variations in tumor types also instigate additional complexity. Machine vision brain addresses the problem. This research’s objective was to develop a classification model based on machine techniques using Magnetic Resonance Imaging (MRI). For this purpose, novel hybrid-brain-tumor-classific...

Journal: :iranian journal of cancer prevention 0
kazem anvari solid tumor treatment research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran mehdi seilanian toussi solid tumor treatment research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran gholamreza bahadorkhan dept. of neurosurgery, shahid kamiab hospital, faculty of medicine, mashhad university of medical sciences, mashhad, iran motahare bitaghsir omid hospital, mashhad university of medical sciences, mashhad, iran mozhgan heidari dept. of radiation oncology, mashhad university of medical sciences, mashhad, iran mitra fazl ersi solid tumor treatment research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran

background: central nervous system (cns) tumors have accounted for approximately one fourth of all pediatric malignancies. cns tumors have been the most common solid malignancies among the children. in this study, we have evaluated survival and prognostic factors in children with non-brain stem astrocytoma. methods: children with non-brain stem astrocytoma, referring to radiation oncology cente...

Journal: :acta medica iranica 0
f. amouzegar - hashemi p. haddad m. sajjadi k.dehshiri

- astrocytomas, including glioblastoma multiforme (gbm), arc the most common brain tumors. post-operative radiotherapy plays an important rote in their treatment. records of all patients with a pathologic diagnosis of astrocytoma referred for radiotherapy from 1987-1992 were reviewed and prognostic factors with regard to recurrences were analyzed. during the study period, 162 astrocytoma patien...

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