نتایج جستجو برای: grey matter
تعداد نتایج: 230388 فیلتر نتایج به سال:
introduction: in the present research, the effect of morphine consumption during pregnancy on the development of the embryo’s spinal cord was studied in wistar rat. methods: female wistar rats (wt: 250-300 g) were mated with males. the test group received morphine (0.01 mg/ml) in their drinking water. pregnant rats were later killed with chloroform on the 12th, 13th and 14th days of pregnancy, ...
Voxel-based morphometry (VBM) is commonly used to study systematic differences in brain morphology from patients with various disorders, usually by comparisons with control subjects. It has often been suggested, however, that VBM is also sensitive to variations in composition in grey matter. The nature of the grey matter changes identified with VBM is still poorly understood. The aim of the cur...
Neuroimaging evidences have shown the association of intelligence with several structural brain properties in normal individuals. However, this association for attention deficit hyperactivity disorder (ADHD) is need to be investigated. we estimated grey matter density of the brain using MRI scanning on 56 ADHD individuals comprising 30 combined (age=10.44±2.41, IQ=112.13±13.15, male, 24 right h...
Grey matter volume and cortical thickness are the two most widely used measures for detecting grey matter morphometric changes in various diseases such as schizophrenia. However, these two measures only share partial overlapping regions in identifying morphometric changes. Few studies have investigated the contributions of the potential factors to the differences of grey matter volume and corti...
Magnetic resonance imaging was used to evaluate the influence of sex and brain size on compartmental brain volumes (grey matter, white matter, CSF) in a large and well-matched sample of neurologically normal women (n = 50) and men (n = 50). As expected, we found a significant sex difference for the absolute volumes of total brain, grey matter, white matter and CSF, with greater volumes for men....
The segmentation of MRI scans of patients with white matter lesions (WML) is difficult because the MRI characteristics of white matter lesions are similar to those of grey matter. Intensity based statistical classification techniques misclassify some WML as grey matter and some grey matter as WML. We developed a fast elastic matching algorithm that warps a reference data set containing informat...
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