Journal of neuroimaging : official journal of the American Society of Neuroimaging
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Clinical Trial
MR venography in patients with multiple sclerosis and correlation with clinical and MRI parameters.
Multiple sclerosis (MS) has been associated with chronic cerebrospinal venous insufficiency. We aim to evaluate the correlation between extracranial veins stenosis evaluated with MR venography (MRV) and clinical/MR parameters of MS. ⋯ In MS the presence/severity of jugular vein stenosis identified with 3T-MRV is not related to MR-visible tissue damage. Moreover no abnormal flow parameters were found in stenosed veins.
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Case Reports
Serial CT findings of a rapidly calcified epidural hematoma in a young adult: a case report.
We report serial computed tomography (CT) findings in a rare case of a rapidly calcified epidural hematoma. A 21-year-old female patient was admitted to our hospital after being involved in a motor vehicle accident. An initial cranial CT revealed a right frontal bone fracture. ⋯ Follow-up CT revealed an ossified epidural hematoma (EDH) 17 days after the head injury, and the ossification later thickened. However, a decrease in the width of the EDH was observed during the 9 months of follow-up during which serial CT images were acquired. The EDH resolved 9 months after the initial trauma, but the calcification layer remained thickened.
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We performed a longitudinal analysis based on magnetic resonance (MR) imaging to investigate the brain structural and perfusion changes caused by insulin therapy in patients with type II diabetes. ⋯ In patients with type II diabetes, brain expansion and hyperperfusion were demonstrated 1 year after initiation of insulin therapy, and insulin therapy could contribute to the brain volume gainment in the patients with type II diabetes.
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An effort to define and validate a Harmonized Protocol for standard hippocampal segmentation is being carried out. We wished to estimate the effect of magnetic resonance image (MRI) spatial orientation on manual hippocampal segmentations to define optimal standard orientation of MRIs for hippocampal volumetry. ⋯ These data show that AC-PC orientation is slightly more reliable for manual segmentations, possibly due to better visualization of the cerebrospinal fluid spaces separating hippocampal head and amygdala. A Delphi panel of experts has used these data to decide on the optimal orientation for a Harmonized Protocol for hippocampal segmentation.
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This study was designed to evaluate various magnetic resonance imaging (MRI) criteria for cavernous sinus (CS) invasion in preoperative evaluation of pituitary macroadenoma. ⋯ MRI criteria may be helpful in evaluating the presence of CS invasion in pituitary macroadenoma.