Correlation between myocardial infarction activity assessed by cardiac magnetic resonance imaging and the evolution of cardiac function after PCI
Objective: To investigate the correlation of cardiac magnetic resonance imaging (MRI) in the assessment of myocardial activity in patients with myocardial infarction and the outcome of cardiac function after PCI. Methods: 30 patients with myocardial infarction (MI) who had complete clinical and i...
Main Author: | |
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Format: | Article |
Language: | English |
Published: |
Editorial Board of Journal of Hainan Medical University
2020-05-01
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Series: | Journal of Hainan Medical University |
Subjects: | |
Online Access: | http://www.hnykdxxb.com/PDF/202009/07.pdf |
Summary: | Objective: To investigate the correlation of cardiac magnetic resonance imaging (MRI) in
the assessment of myocardial activity in patients with myocardial infarction and the outcome
of cardiac function after PCI. Methods: 30 patients with myocardial infarction (MI) who
had complete clinical and imaging data from July 2016 to December 2018 after PCI were
analyzed retrospectively. MR and echocardiogram were performed before and 6 months
after PCI, and the parameters related to left ventricular function were measured by postprocessing
software of MRI workstation. The left ventricular transmural degree of CMR late
gadolinium enhancement was compared with the left ventricular wall motion degree of 6-month
echocardiography as a standard to judge the viable myocardium. Result: There were 193 left
ventricular segmental abnormalities in 30 cases, including 121 viable myocardium and 72 non
viable myocardium in CMR-LGE before operation. Six months after PCI, echocardiography
showed that 125 of 193 abnormal segments of left ventricle detected by CMR-LGE before PCI
were viable myocardium and 68 were non viable myocaridium.The sensitivity and specificity
of CMR-LGE to determinate of viable myocardium were 92.0% and 91.1% respectively.
The larger the non-viable myocardial area of the left ventricular wall, the worse the recovery
of wall motion ability, and there was a negative correlation between them (r=0.416, P<0.05).
The first-pass perfusion time in CMR-LEG region was significantly longer than that in normal
myocardial region (4.85 (+) 1.51) s and (3.79 (+) 1.73) s, respectively. The difference was
statistically significant (t = 5.191, P < 0.05). Conclusion: MRI can evaluate the myocardial
activity of myocardial infarction, reflect the range of viable myocardium, and provide imaging
basis for clinical treatment and prognosis. |
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ISSN: | 1007-1237 1007-1237 |