title: 3.0 T cardiovascular magnetic resonance in patients treated with coronary stenting for myocardial infarction: evaluation of short term safety and image quality.
abstract: OBJECTIVE
  To evaluate safety and image quality of cardiovascular magnetic resonance (CMR) at 3.0 T in patients with coronary stents after myocardial infarction (MI), in comparison to the clinical standard at 1.5 T.
  
  
  METHODS
  Twenty-five patients (21 men; 55 +/- 9 years) with first MI treated with primary stenting, underwent 18 scans at 3.0 T and 18 scans at 1.5 T. Twenty-four scans were performed 4 +/- 2 days and 12 scans 125 +/- 23 days after MI. Cine (steady-state free precession) and late gadolinium-enhanced (LGE, segmented inversion-recovery gradient echo) images were acquired. Patient safety and image artifacts were evaluated, and in 16 patients stent position was assessed during repeat catheterization. Additionally, image quality was scored from 1 (poor quality) to 4 (excellent quality).
  
  
  RESULTS
  There were no clinical events within 30 days of CMR at 3.0 T or 1.5 T, and no stent migration occurred. At 3.0 T, image quality of cine studies was clinically useful in all, but not sufficient for quantitative analysis in 44% of the scans, due to stent (6/18 scans), flow (7/18 scans) and/or dark band artifacts (8/18 scans). Image quality of LGE images at 3.0 T was not sufficient for quantitative analysis in 53%, and not clinically useful in 12%. At 1.5 T, all cine and LGE images were quantitatively analyzable.
  
  
  CONCLUSIONS
  3.0 T is safe in the acute and chronic phase after MI treated with primary stenting. Although cine imaging at 3.0 T is suitable for clinical use, quantitative analysis and LGE imaging is less reliable than at 1.5 T. Further optimization of pulse sequences at 3.0 T is essential.
authors.affiliation: Department of Cardiology, VU University Medical Center, Room 5F003 De Boelelaan 1117, Amsterdam 1081 HV, The Netherlands. R.Nijveldt@vumc.nl
authors.forename: Robin
authors.initials: R
authors.lastname: Nijveldt
authors.forename: Alexander
authors.initials: A
authors.lastname: Hirsch
authors.forename: Mark B M
authors.initials: MB
authors.lastname: Hofman
authors.forename: Aernout M
authors.initials: AM
authors.lastname: Beek
authors.forename: Anje M
authors.initials: AM
authors.lastname: Spijkerboer
authors.forename: Jan J
authors.initials: JJ
authors.lastname: Piek
authors.forename: Albert C
authors.initials: AC
authors.lastname: van Rossum
mesh_terms: D016477:Artifacts; D003287:Contrast Media; D005260:Female; D006801:Humans; D019028:Magnetic Resonance Imaging, Cine; D008297:Male; D008536:Meglumine; D008875:Middle Aged; D009203:Myocardial Infarction / Q000473:pathology / Q000628:therapy*; D009942:Organometallic Compounds; D018709:Statistics, Nonparametric; D015607:Stents; D016896:Treatment Outcome