title: Fusion of MR coronary angiography and viability imaging: feasibility and clinical value for the assignment of myocardial infarctions.
abstract: OBJECTIVE
  To investigate the feasibility of image fusion of MR-coronary angiography (MRCA) and delayed gadolinium enhancement imaging (LGE) and to assign areas of myocardial infarction to the corresponding supplying coronary arteries.
  
  
  METHODS
  An interactive segmentation of the coronary arteries was performed in MRCA data sets (n=25). The LGE slices were matched onto the vessel segmentation to perform a fused analysis of coronary artery anatomy and LGE. The results were compared to the segmental model recommended by the American Heart Association (AHA). Standard of reference was the identification of the culprit lesion in the invasive coronary angiography (CA) (n=20).
  
  
  RESULTS
  The fused analysis allowed the assignment of MI to the supplying coronary artery in 13/20 patients. The sensitivities/specificities for the assignment of MI to the three main vessels were: LAD 63%/100%, LCX 75%/100%, and RCA 56%/100%, respectively. Using the AHA segmental model the sensitivities/specificities for the correct assignment of MI to the three main vessels were: LAD 88%/58%, LCX 94%/75%, and RCA 77%/73%, respectively.
  
  
  CONCLUSIONS
  Fusion images of MRCA and LGE provides added diagnostic information in the effort to determine the epicardial vessels responsible for the postischemic myocardial injury and therefore might be helpful to establish appropriate future therapeutic steps.
authors.affiliation: Department of Diagnostic and Interventional Radiology, Eberhard-Karls-University Tuebingen, Hoppe-Seyler-Str. 3, 72076 Tuebingen, Germany. achim.seeger@med.uni-tuebingen.de
authors.forename: Achim
authors.initials: A
authors.lastname: Seeger
authors.forename: Anja
authors.initials: A
authors.lastname: Hennemuth
authors.forename: Bernhard
authors.initials: B
authors.lastname: Klumpp
authors.forename: Michael
authors.initials: M
authors.lastname: Fenchel
authors.forename: Ulrich
authors.initials: U
authors.lastname: Kramer
authors.forename: Christiane
authors.initials: C
authors.lastname: Bretschneider
authors.forename: Stefanie
authors.initials: S
authors.lastname: Mangold
authors.forename: Andreas E
authors.initials: AE
authors.lastname: May
authors.forename: Claus D
authors.initials: CD
authors.lastname: Claussen
authors.forename: Heinz-Otto
authors.initials: HO
authors.lastname: Peitgen
authors.forename: Stephan
authors.initials: S
authors.lastname: Miller
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods*; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods*; D008297:Male; D009203:Myocardial Infarction / Q000150:complications / Q000175:diagnosis*; D017682:Myocardial Stunning / Q000175:diagnosis* / Q000209:etiology; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013382:Subtraction Technique