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Quantitative T2 mapping for detecting myocardial edema after reperfusion of myocardial infarction: validation and comparison with T2-weighted images

 Chul Hwan Park  ;  Eui-Young Choi  ;  Hyuck Moon Kwon  ;  Bum Kee Hong  ;  Byoung Kwon Lee  ;  Young Won Yoon  ;  Pil-Ki Min  ;  Andreas Greiser  ;  Mun Young Paek  ;  Wei Yu  ;  Yon Mi Sung  ;  Sung Ho Hwang  ;  Yoo Jin Hong  ;  Tae Hoon Kim 
 International Journal of Cardiovascular Imaging, Vol.29(1) : 65-72, 2013 
Journal Title
 International Journal of Cardiovascular Imaging 
Issue Date
This study evaluates the clinical usefulness of T2 mapping for the detection of myocardial edema in the re-perfused acute myocardial infarction (MI). Cardiac MRIs were reviewed in 20 patients who had acute MI after reperfusion therapy. The regional T2 values and T2-weighted image (T2WI) signal intensities (SI) were measured in the infarcted and remote zones of the myocardium. Patients were divided into three groups according to the signal patterns of the infarcted myocardium on the T2WIs. The T2 values of the infarcted zones were compared on the T2 maps among the three groups. Validation of the T2 values was performed in the normal myocardium of seven healthy volunteers. There were no significant differences in mean T2WI-SI or T2 values in the normal myocardium of healthy volunteers compared to the remote myocardium of acute MI patients (p > 0.05). Mean SI on the T2WIs was significantly higher in the infarcted myocardium (81.3 ± 37.6) than in the remote myocardium (63.8 ± 18.1) (p < 0.05). The T2WIs showed high SI in ten patients (group 1), iso-SI in seven (group 2), and low SI in three (group 3) in the infarcted myocardium, compared to the remote myocardium. The T2 maps showed that T2 values in the infarcted myocardium had mostly increased, regardless of group, with values of 71 ± 9 ms in group 1, 64.9 ± 7.4 ms in group 2, and 61.4 ± 8.5 ms in group 3. T2 mapping is superior to T2WI for detecting areas of high SI in the infarcted myocardium. Therefore, quantitative T2 mapping sequences may be more useful and reliable in identifying myocardial edema in the infarcted myocardium than T2WI.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
권혁문(Kwon, Hyuck Moon) ORCID logo https://orcid.org/0000-0001-9901-5015
김태훈(Kim, Tae Hoon) ORCID logo https://orcid.org/0000-0003-3598-2529
민필기(Min, Pil Ki) ORCID logo https://orcid.org/0000-0001-7033-7651
박철환(Park, Chul Hwan) ORCID logo https://orcid.org/0000-0002-0004-9475
윤영원(Yoon, Young Won) ORCID logo https://orcid.org/0000-0002-0907-0350
이병권(Lee, Byoung Kwon) ORCID logo https://orcid.org/0000-0001-9259-2776
최의영(Choi, Eui Young) ORCID logo https://orcid.org/0000-0003-3732-0190
홍범기(Hong, Bum Kee) ORCID logo https://orcid.org/0000-0002-6456-0184
홍유진(Hong, Yoo Jin) ORCID logo https://orcid.org/0000-0002-7276-0944
황성호(Hwang, Sung Ho)
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