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OBJECTIVE To describe hyperintense vessels sign (HVS) in patients with acute stroke on fluid-attenuated inversion recovery (FLAIR) MRI and determine its clinical significance and utility. BACKGROUND Enhancement of vessels on postcontrast MRI in patients with acute stroke is considered an indicator of early brain ischemia. Recently, the FLAIR technique has(More)
Twenty-three elderly patients were found to have a consistent pattern of leukoencephalopathy by computed tomography and nuclear magnetic resonance imaging. Eight patients presented with vague, nonspecific symptoms and had no neurologic deficits. The other 15 patients had neurologic deficits that presented in one of three ways: stroke, seven patients; slowly(More)
PURPOSE Reversible posterior leukoencephalopathy syndrome (RPLS) is an increasingly recognized brain disorder most commonly associated with malignant hypertension, toxemia of pregnancy, or the use of immunosuppressive agents. When associated with acute hypertension, RPLS typically occurs concurrently with the fulminant clinical syndrome of hypertensive(More)
BACKGROUND AND PURPOSE Fluid-attenuated inversion-recovery (FLAIR) MR imaging may show subarachnoid hemorrhage (SAH) with high sensitivity. We hypothesized that the FLAIR technique is effective and reliable in the diagnosis of cerebral intraventricular hemorrhage (IVH). METHODS Two observers evaluated the 1.5-T MR fast spin-echo FLAIR images, T1- and(More)
One hundred thirty-five normal volunteers were examined by computerized tomography (CT) and their ventricular size was measured by planimetry. A pattern of change in ventricular size from the first through the ninth decades was discerned and quantified. A gradually progressive increase in ventricular size from the first through sixth decades was followed by(More)
Magnetic resonance imaging was sued to examine the brains of 13 patients with systemic lupus erythematosus (SLE) who had experienced symptoms and signs of encephalopathy. All the patients had normal computerized tomographic scans. Four patients with abnormal magnetic resonance imaging studies had active central nervous system disease. None of the 9 patients(More)
We report a giant pituitary adenoma with aggressive histologic features that prominently invaded the nasopharynx. Magnetic resonance imaging (MRI) demonstrated a large heterogeneous nodular mass that was hypointense to isointense on T1-weighted images and mixed hypointense, isointense, and hyperintense on T2-weighted images. The mass measured 7.5 x 5 x 7(More)
The authors study brain regional glucose metabolism prospectively in multiple sclerosis (MS) using high-resolution 2-[18-F]fluoro-2-deoxy-D-glucose positron emission tomography (FDG PET) in 25 MS patients of the Dent Neurologic Institute compared with 6 healthy subjects. Glucose metabolism is measured in 20 regions of interest using a line-profile(More)
Four cases are presented of marked periventricular oedema associated with hydrocephalus on CT scan. In one of the patients oedema, as well as the hydrocephalus, subsided after successful re-establishment of CSF absorption. The most likely explanation of the periventricular oedema is increased absorption of CSF by periventricular brain tissue.
Nuclear magnetic resonance (NMR) imaging was superior to CT for imaging the brain lesions of 27 patients with MS. The incidence of abnormal examinations was 78% by NMR and 63% by CT. In cases in which both studies were abnormal, NMR usually demonstrated many more lesions and more extensive involvement than CT. The appearance and locations of lesions(More)