Improvement of migraine after patent foramen ovale percutaneous closure in patients with subclinical brain lesions: a case-control study.

Objectives: We sought to evaluate the benefits on frequency and severity of migraine recurrence after patent foramen ovale (PFO) closure in patients with subclinical brain lesions at magnetic resonance imaging (MRI).

Background: Migraine improvement has been reported after PFO closure in patients with cerebrovascular symptomatic events. Subclinical brain MRI lesions are detectable in patients with PFO and in migraineurs.

3.0 T magnetic resonance in neuroradiology.

Ever since the introduction of magnetic resonance (MR), imaging with 1.5 T has been considered the gold standard for the study of all body areas. Until not long ago, higher-field MR equipment was exclusively employed for research, not for clinical use.