Event-related potentials and deep grey matter atrophy in multiple sclerosis: Exploring the possible associations with cognition.

Background: Event-related potentials (ERPs) have been proposed as a neurophysiological biomarker to capture cognitive dysfunction in multiple sclerosis (MS). Few studies have evaluated the relationships between ERPs and brain atrophy as known marker of structural brain damage related to cognitive impairment (CI).

Objectives: To explore the relationships of brain atrophy, including of the cortex and deep grey matter, with ERP abnormalities and cognitive function, as defined using the Brief Repeatable Battery of Neuropsychological Tests (BRBN).

Role of perfusion-weighted imaging at 3 Tesla in the assessment of malignancy of cerebral gliomas.

Purpose: This study was performed to clarify the role of perfusion-weighted imaging (PWI) at 3 Tesla in the characterisation of haemodynamic heterogeneity within gliomas and surrounding tissues and in the differentiation of high-grade from low-grade gliomas.

Materials And Methods: We examined 36 patients with histologically verified gliomas (25 with high-grade and 11 with low-grade gliomas). PWI was performed by first-pass gadopentetate dimeglumine T2*-weighted echo-planar images, and cerebral blood volume (CBV) maps were computed with a nondiffusible tracer model.

Contrast-bolus MR angiography of the transplanted kidney with a low-field (0.5-T) scanner: diagnostic accuracy, sensitivity and specificity of images and reconstructions in the evaluation of vascular complications.

Purpose: This study was performed to assess the feasibility, interobserver variability, sensitivity, specificity and diagnostic accuracy of raw data and postprocessed images from a low-field (0.5-T) magnetic resonance (MR) unit in evaluating vascular complications of kidney grafts.

Materials And Methods: We enrolled 49 patients undergoing MR angiography (MRA) for a clinical suspicion of renal artery stenosis.

Transient focal lesion in the splenium of the corpus callosum: MR imaging with an attempt to clinical-physiopathological explanation and review of the literature.

Purpose: This article discusses the possible pathophysiological conditions responsible for magnetic resonance imaging (MRI) finding of transient focal lesions in the splenium of the corpus callosum on the basis of our experience and a review of the literature.

Materials And Methods: In six patients undergoing computed tomography (CT) and MRI examinations, focal nonhemorrhagic lesions of the splenium of the corpus callosum were incidentally discovered. Patients had been referred for suspected encephalitis (n=2), dural sinus thrombosis (n=1) and multiple sclerosis (n=3).

MRI post-vertebroplasty.

Purpose: Percutaneous vertebroplasty (PVP), first described by Hervè Deramond in 1984, is an interventional procedure for the treatment of aggressive vertebral angioma. The aim of this study was to evaluate magnetic resonance imaging (MRI) patterns in the affected vertebrae before and after vertebroplasty by determining changes in signal intensity and size and distribution of bone cement within the vertebra at follow-up carried out at 1 week, 6 months and 12 months.

Materials And Methods: Fourteen patients were examined using MRI, for a total of 41 treated vertebrae; MRI was performed with a 0.