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01.12.2008 | Cardiac

Contrast-enhanced cardiac MRI before coronary artery bypass surgery: impact of myocardial scar extent on bypass flow

verfasst von: Peter Hunold, Parwis Massoudy, Claudia Boehm, Thomas Schlosser, Kai Nassenstein, Stephan Knipp, Holger Eggebrecht, Matthias Thielmann, Raimund Erbel, Heinz Jakob, Jörg Barkhausen

Erschienen in: European Radiology | Ausgabe 12/2008

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Abstract

The aim of the study was to relate the extent of myocardial late gadolinium enhancement (LGE) in cardiac MRI to intraoperative graft flow in patients undergoing coronary artery bypass graft (CABG) surgery. Thirty-three CAD patients underwent LGE MRI before surgery using an inversion-recovery GRE sequence (turboFLASH). Intraoperative graft flow in Doppler ultrasonography was compared with the scar extent in each coronary vessel territory. One hundred and fourteen grafts were established supplying 86 of the 99 vessel territories. A significant negative correlation was found between scar extent and graft flow (r = −0.4, p < 0.0001). Flow in grafts to territories with no or small subendocardial scar was significantly higher than in grafts to territories with broad nontransmural or transmural scar (75 ± 39 vs. 38 ± 26 cc min⁻¹; p < 0.0001). In summary, the extent of myocardial scar as defined by contrast-enhanced MRI predicts coronary bypass graft flow. Beyond the probability of functional recovery, preoperative MRI might add value to surgery planning by predicting midterm bypass graft patency.

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Titel: Contrast-enhanced cardiac MRI before coronary artery bypass surgery: impact of myocardial scar extent on bypass flow
verfasst von: Peter Hunold
Parwis Massoudy
Claudia Boehm
Thomas Schlosser
Kai Nassenstein
Stephan Knipp
Holger Eggebrecht
Matthias Thielmann
Raimund Erbel
Heinz Jakob
Jörg Barkhausen
Publikationsdatum: 01.12.2008
Verlag: Springer-Verlag
Erschienen in: European Radiology / Ausgabe 12/2008
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-008-1066-y

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Contrast-enhanced cardiac MRI before coronary artery bypass surgery: impact of myocardial scar extent on bypass flow

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