The studied coronary stents were not influenced by heating or motion during 1.5-T MR imaging. Artifact size differed according to the type and size of the stent and the MR imaging sequence used. Thus, patients with these stents can be safely examined.

Objective-To investigate the safety, eYcacy, and clinical application of a new self centring device ("angel wings") for closure of secundum atrial septal defects (ASD II) and persistent foramen ovale in all age groups. Design-Multicentre, prospective, nonrandomised study. Modifications of the design, however, seem to be mandatory as 4% of patients developed serious complications. (Heart 1998;80:517-521) Patients-Inclusion