Korean Circ J.  2000 Oct;30(10):1257-1263. 10.4070/kcj.2000.30.10.1257.

Usefulness of Contrast-Enhanced Magnetic Resonance Imaging in the Prediction of Myocardial Viability after Acute Myocardial Infarction

• Jung SE
• Youn HJ
• Chung WS
• Hahn ST
• Hong SJ
• Kim CY

• KMID: 1938410
• DOI: http://doi.org/10.4070/kcj.2000.30.10.1257

Abstract

PURPOSE: The aim of this study was to evaluate the utility of contrast-enhanced MRI with first-pass and delayed images in prediction of myocardial viability after acute myocardial infarction.
MATERIALS AND METHODS
Ten patients (M:F=:4, mean age =6 5 years) with acute myocardial infarction underwent first-pass image after bolus injection of gadolinium (one image/sec for 120sec)and delayed image (7 2 minutes later). According to 60 segments on midventricular level, the assessment of MRI were concerned about location of lesion, depth of lesion, enhancement on first-pass image and enhancement pattern on delayed image. MRI findings were compared with wall motion on resting echocardiography and stress or follow-up echocardiography.
RESULTS
1) MRI findings were classified into 4 types: normal enhancement on first-pass and delayed images (type 1), normal enhancement on first-pass image and nontransmural hyperenhancement on delayed image (type 2), non-transmural enhancing defect on first-pass image and transmural enhancement with endocardial non-enhancing defect on delayed image (type 3), and transmural enhancing defect on first-pass image and transmural hyperenhancement on delayed image (type 4).2) Type 2 suggested viable myocardium and type 3 had high porbability of viability. Type was compatible with non-viable myocardium.
CONCLUSION
Enhancing defect on first-pass image and involving thickness on both the first-pass image and delayed image in contrast enhanced MRI may predict myocardial viability.

MeSH Terms

Echocardiography
Follow-Up Studies
Gadolinium
Humans
Magnetic Resonance Imaging*
Myocardial Infarction*
Myocardium
Gadolinium