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

被引：2

作者：

Hunold, Peter ^{[1
]}

Massoudy, Parwis ^{[2
]}

Boehm, Claudia ^{[2
]}

Schlosser, Thomas ^{[1
]}

Nassenstein, Kai ^{[1
]}

Knipp, Stephan ^{[2
]}

Eggebrecht, Holger ^{[3
]}

Thielmann, Matthias ^{[2
]}

Erbel, Raimund ^{[3
]}

Jakob, Heinz ^{[2
]}

Barkhausen, Joerg ^{[1
]}

机构：

[1] Univ Duisburg Essen, Univ Hosp Essen, Dept Diagnost & Intervent Radiol & Neuroradiol, D-45122 Essen, Germany

[2] Univ Duisburg Essen, W German Heart Ctr Essen, Dept Thorac & Cardiovasc Surg, D-45122 Essen, Germany

[3] Univ Duisburg Essen, W German Heart Ctr Essen, Dept Cardiol, D-45122 Essen, Germany

来源：

EUROPEAN RADIOLOGY | 2008年 / 18卷 / 12期

关键词：

Cardiac MRI; Contrast-enhanced MRI; Myocardial viability; Coronary artery disease; Coronary artery bypass graft; Doppler ultrasonography;

D O I：

10.1007/s00330-008-1066-y

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

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=similar to 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.

引用

页码：2756 / 2764

页数：9

共 33 条

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