[Ischaemic or transient attack? Magnetic resonance imaging in transient ischaemic attack: a review of 106 cases].

Introduction: Transient ischaemic attack (TIA) has classically been defined as an episode of self-limited focal neurological deficit lasting up to 24 hours, with no neuroimaging evidence of established acute ischaemic injury. However, the definition of this entity is changing, and is adapting to new times and new diagnostic techniques, including magnetic resonance imaging (MRI) with diffusion sequences. An early and comprehensive approach to TIA, including MRI, is important to rule out clinically recovered established ischaemic strokes, in order to optimise the diagnostic and therapeutic management of patients.

[Appraisal of cerebral atrophy in multiple sclerosis by means of the corpus callosum index].

Introduction: The course of multiple sclerosis is characterised by the development of cerebral atrophy. It is of interest to monitor it in order to evaluate the treatment response, and the preferred technique consists in performing brain volume analyses, which are currently restricted to the field of research.

Aim: To analyse the corpus callosum index (CCI) as a possible alternative to the methods based on brain segmentation.

[Description of a series of hospital patients with a spinal fistula].

Introduction: Although spinal fistulas account for 70% of all spinal arteriovenous malformations, they are an underdiagnosed condition. The arteriovenous shunt produces vascular congestion that gives rise to a progressive myelopathy, sometimes irreversible if it is not treated in the early stages.

Aim: To describe the clinicoradiological characteristics of a series of patients with spinal fistulas.