title: Clinical safety of magnetic resonance imaging early after coronary artery stent placement.
abstract: OBJECTIVE
  Our aim was to examine the rate of adverse cardiac events in patients undergoing magnetic resonance imaging (MRI) <8 weeks after coronary stent placement.
  
  
  BACKGROUND
  The risk of coronary stent thrombosis from dislodgement due to MRI early after stent placement is not well defined. Manufacturers recommend postponing MRI studies until eight weeks after coronary stent placement.
  
  
  METHODS
  We analyzed the Mayo Clinic Rochester Percutaneous Coronary Intervention Database and examined records of 111 patients who underwent MRI <8 weeks after coronary stent placement treated with aspirin and a thienopyridine. Occurrence of death, myocardial infarction (MI), and repeat revascularization within 30 days of MRI were recorded.
  
  
  RESULTS
  Magnetic resonance imaging (1.5 tesla) was performed within a median of 18 days (range, 0 to 54 days) after coronary stent placement. Four noncardiac deaths occurred, and three patients had repeat revascularization procedures. Stent thrombosis did not occur (95% confidence interval, 0% to 3.3%).
  
  
  CONCLUSIONS
  Magnetic resonance imaging <8 weeks after coronary stent placement appears to be safe, and the risk of cardiac death or MI due to stent thrombosis is low. Postponing MRI does not appear to be necessary.
authors.affiliation: Division of Cardiovascular Diseases, Mayo Clinic, Jacksonville, Florida 32224, USA. gerber.thomas@mayo.edu
authors.forename: Thomas C
authors.initials: TC
authors.lastname: Gerber
authors.forename: Panayotis
authors.initials: P
authors.lastname: Fasseas
authors.forename: Ryan J
authors.initials: RJ
authors.lastname: Lennon
authors.forename: Venkata U
authors.initials: VU
authors.lastname: Valeti
authors.forename: Christopher P
authors.initials: CP
authors.lastname: Wood
authors.forename: Jerome F
authors.initials: JF
authors.lastname: Breen
authors.forename: Peter B
authors.initials: PB
authors.lastname: Berger
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015906:Angioplasty, Balloon, Coronary; D004869:Equipment Safety; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000009:adverse effects*; D008297:Male; D008499:Medical Records; D008875:Middle Aged; D008910:Minnesota; D009203:Myocardial Infarction / Q000473:pathology / Q000628:therapy*; D011184:Postoperative Period; D012189:Retrospective Studies; D015607:Stents; D013927:Thrombosis / Q000453:epidemiology* / Q000209:etiology