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Early and Delayed Myocardial Enhancement in Myocardial Infarction Using Two-Phase Contrast-Enhanced Multidetector-Row CT

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Author(s)
Sung-Min KoYoung-Whan KimSeong-Wook HanJoon-Beom Seo
Keimyung Author(s)
Ko, Sung MinKim, Young HwanHan, Seong Wook
Department
Dept. of Radiology (영상의학)
Dept. of Internal Medicine (내과학)
Journal Title
Korean Journal of Radiology
Issued Date
2007
Volume
8
Issue
2
Keyword
Computed tomography (CT)multidetector-rowIschemic heart diseaseMyocardiumInfarctionHeart
Abstract
Objective : The purpose of this study was to describe the myocardial enhancement patterns in patients with myocardial infarction using two-phase contrast-enhanced multidetector-row computed tomography (MDCT). Materials and Methods : Twenty-three patients with clinically proven myocardial infarction (17 acute myocardial infarction [AMI] and 6 chronic myocardial infarction [CMI]) were examined with two-phase contrast-enhanced ECG-gated MDCT. The presence, location, and patterns of myocardial enhancement on two-phase MDCT images were compared with infarcted myocardial territories determined by using electrocardiogram, echocardiography, thallium-201 single photon emission computed tomography, catheter and MDCT coronary angiography. Results : After clinical assessment, the presence of myocardial infarctions were found in 27 territories (19 AMI and 8 CMI) of 23 patients. Early perfusion defects were observed in 30 territories of all 23 patients. Three territories not corresponding to a myocardial infarction were detected in three patients with AMI and were associated with artifacts. Fourteen of perfusion defects were in the left anterior descending artery territory, four in the left circumflex artery territory, and nine in the right coronary artery territory. Delayed enhancement was observed in 25 territories (17 AMI and 8 CMI) of 21 patients. Delayed enhancement patterns were variable. Transmural early perfusion defects (n =12) were closely associated with transmural late enhancement (n = 5) and subendocardial residual defect with subepicardial late enhancement (n = 5). Conclusion : Myocardial infarction showed early perfusion defects and variable delayed enhancement patterns on two-phase contrast-enhanced MDCT. Delayed enhancement technique of MDCT could provide additional information of the location and extent of infarcted myocardium, and could be useful to plan appropriate therapeutic strategies in patients with AMI.
Keimyung Author(s)(Kor)
고성민
김영환
한성욱
Publisher
School of Medicine
Citation
Sung-Min Ko et al. (2007). Early and Delayed Myocardial Enhancement in Myocardial Infarction Using Two-Phase Contrast-Enhanced Multidetector-Row CT. Korean Journal of Radiology, 8(2), 94–102. doi: 10.3348/kjr.2007.8.2.94
Type
Article
ISSN
1229-6929
DOI
10.3348/kjr.2007.8.2.94
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/36237
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Internal Medicine (내과학)
1. School of Medicine (의과대학) > Dept. of Radiology (영상의학)
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