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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Dural arteriovenous fistulae (DAVF) are cerebrovascular lesions with pathologic shunting into the venous system from arterial feeders. Digital subtraction angiography (DSA) has long been considered the gold standard for diagnosis, but advances in noninvasive imaging techniques now play a role in the diagnosis of these complex lesions. Herein, we describe the case of a patient with right-side pulsatile tinnitus and DAVF diagnosed using computed tomography angiography, magnetic resonance with arterial spin labeling, and DSA. Implications for imaging analysis of DAVFs and further research are discussed.
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Case Reports
Nonanaplastic pleomorphic xanthoastrocytoma with meningeal dissemination presenting with bilateral visual loss.
Pleomorphic xanthoastrocytoma (PXA) is a brain neoplasm included in the astrocytic group, exceptionally manifesting with meningeal dissemination. We described a 27-year-old patient presented with acute bilateral visual loss and papilledema with normal brain computed tomography scan, initially mimicking idiopathic intracranial hypertension (IIH). Brain and spinal cord magnetic resonance imaging (MRI) study revealed a subtle area of hyperintensity of the gyri surrounding the left central sulcus, and contrast enhancement of the thoracic leptomeninges. ⋯ Yearly control MRI demonstrated new brain lesions and marked progression of leptomeningeal spinal enhancement. In spite of this, the patient has remained stable with no new symptoms. Nonanaplastic PXA may present with widespread meningeal dissemination with acute visual loss and papilledema mimicking IIH, and no clinical progression at 3 years.
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To determine whether voxel-based morphometry of the cerebrospinal fluid (CSF) space can accurately differentiate iNPH from other related neurological disorders. ⋯ The VBM-based CSF space analysis can detect disproportionate changes in CSF space and differentiate iNPH patients from those with AD or PD and healthy elderlies accurately.