نتایج جستجو برای: brain lesion
تعداد نتایج: 557044 فیلتر نتایج به سال:
neuroinflamation occurring after traumatic brain injury (tbi) is a complex phenomenon comprising distinct cellular and molecular events involving the injured cerebral tissue. mechanical injury to adult rat brain elucidated the accumulation in the affected area of trophic activity. in the tissue adjacent to the injury, trophic titers began to rise after the lesion. this study aimed to determine ...
one of the main problems following road accidents is brain injury after which death and disability in the most active population occurs. considering the fact that there is no definite clinical treatment for repair of damaged brain tissue, the present study examined the effects of autologous adult neural stem/progenitor cells (ns/pcs) seeded in a nanoscaffold named puramatrix in acute brain inju...
BACKGROUND Studies have suggested that T2 lesion activity is prominent in early relapsing-remitting multiple sclerosis, whereas brain atrophy, while seen early, appears more evident in later progressive disease. The temporal relation between these processes remains unclear. OBJECTIVE To explore the association between changing brain lesion loads and subsequent tissue atrophy in multiple scler...
Scientists who study the brain try to understand how it performs everyday behaviors like language, memory, and emotion. learn a lot by studying these change when is damaged. Over past 200 years, they have made many discoveries individuals with damage. For example, one patient could not form sentences after damaging specific area of his brain. The scientist studied him concluded that damaged was...
OBJECTIVE Neuromyelitis optica and its spectrum disorder (NMOSD) can present similarly to relapsing-remitting multiple sclerosis (RRMS). Using a quantitative lesion mapping approach, this research aimed to identify differences in MRI brain lesion distribution between aquaporin-4 antibody-positive NMOSD and RRMS, and to test their diagnostic potential. METHODS Clinical brain MRI sequences for ...
Background: Regarding the complications of chronic intractable epilepsy, the presence of respectable lesions in many these patients that can be diagnosed with noninvasive sensitive techniques such as MRI and SPECT and the unrecognized significance of epilepsy surgery in our country, we have decided to review the management of medically intractable epilepsy in patients, who underwent epilepsy su...
OBJECTIVES To assess the magnitude of the correlations between disability and composite MRI scores in patients with MS. METHODS T2- and T1-weighted MRI, magnetization transfer imaging, diffusion tensor imaging, and MRS imaging scans of the brain from 23 patients with MS were obtained. T2 lesion volume, T1 lesion volume, brain magnetization transfer ratio, average brain diffusivity (D), and br...
Brain lesion segmentation provides a valuable tool for clinical diagnosis, and convolutional neural networks (CNNs) have achieved unprecedented success in the task. Data augmentation is widely used strategy that improves training of CNNs, design method brain still an open problem. In this work, we propose simple data approach, dubbed as CarveMix, CNN-based segmentation. Like other "mix"-based m...
UNLABELLED The aim of this study was to evaluate the diagnostic value of whole-body (18)F-FDG PET imaging in the differentiation of metastatic brain tumor from primary brain tumor and in the localization of the primary lesion in patients with metastatic brain tumor. METHODS The subjects consisted of 127 patients (77 men, 50 women; mean age +/- SD, 55 +/- 12 y) with brain masses that were susp...
SUMMARY Tuberculoma of the central nervous system is one of the rare and unusual form of Tuberculous in Iranian children, that often present with mass lesion. This is report A 14 months old boy, admitted because ahd fever, irritability, anorexics had right side hemiplegia for two months. Positive finding was tuberculin test and CT brain scan with 2 hyperdenc mass (Ring Shaped) in the posto-m...
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