The indices of ventricles and cerebral sulci in 30 ischemic vascular dementia patients and 30 patients with ischemic stroke were calculated with CT based technique .

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Objective To study the significant MRI expresses of central sulci of 100 healthy people in order to improve the understanding of central sulci and its adjacent structures through MRI imaging .

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Methods : CT images of 50 cases of healthy old man were sampled randomly and the functional areas of cerebral cortex were identified by superficial sulci and gyri of brain .

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Results : Superficial sulci and gyri of brain were showed clearly and identified easily on CT images of the aged .

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Results At the early stage of the disease diffuse encephalic swelling compressed or occluded ventricles sulci and cisterna were seen on MRI in all 36 cases .

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The yellow-tan exudate of acute bacterial meningitis seen here obscures the sulci .

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Identification of the Central Sulcus and Its Neighboring Sulci on Axial MRI

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The left cerebral hemisphere is smaller with deeper sulci and narrower gyri .

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MRI shows the sulci of brain around the lesion become narrow .

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Cerebral sulci swelling and compressed or occluded ventricles were seen on CT and MRI .

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Absence of local sulci compression and displacement of the ventricles ;

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Sulci and gyri of the left and right hemispheressymmetrical basic shape is the leaf and the brain to locate an important symbol .

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A purulent exudate is seen beneath the meninges in the brain of this patient with acute meningitis from Streptococcus pneumoniae infection . The exudate obscures the sulci .

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To study the demonstration rate and applicability of the system for localizing central sulci and adjacent gyri clinically .

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Results 5 normal cases with surface anatomy scanning showed excellent visualization of the sulci and gyri on the surface of the brain .

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Results : Various fissures sulci and gyri of the fetal brain appeared sequentially according to the chronological stages and were demonstrated very well on MR imaging .

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The cerebral atrophy seen here mainly in the frontal and parietal regions is characterized by narrowed gyri and widened sulci .

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Conclusion MR imaging is the best method to show central sulci and its adjacent structures and has definite values in locating the lesions of central sulci .

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Results The insula had triangle shape because of the pyramidal configuration and was surrounded by anterior superior and inferior limiting sulci .

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Methods : Eighty-six cases traumatic subarachnoid hemorrhage each case rechecked above 1 time at least their cortical sulci and cistern abnormal changes were observed in details .

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Of the 4 cases of positive findings the tumor was located at the pelvic peritoneum or the paracolic sulci peritoneum .

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The volume of olfactory bulbs depth of olfactory sulci and diameters of pituitary gland and stalk were measured and compared .

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Conclusion Usually the bilateral central sulci are symmetrical . Based on the above signs correct identification of the central sulcus can be obtained in up to 98.5 % of cases .

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Low density of grey matter of temproral lobe sulci narrowing or disappearance and unclear grey matter margin .

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The morphology on the sulci of the cerebral hemispheres in the Chinese

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The sulci of the right semisphere of the cerebrum were more than those of the left one ( P < 0.05 ) .

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Localization of Cerebral Gyri and Sulci on Axial MRI in Normal Chinese People

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RESULTS : Normal form of sulci and gyri was observed on the surface of cerebrum and the size and form of hippocampus with arcuate eminence on the coronal cut were also normal and there was no obvious atrophy in rats of all groups .

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