Journal
EUROPEAN RADIOLOGY
Volume 17, Issue 2, Pages 331-338Publisher
SPRINGER
DOI: 10.1007/s00330-006-0391-2
Keywords
multidetector computed tomography; myocarditis; cardiac MRI
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The aim of the study was to determine the potential diagnostic value of contrast-enhanced echocardiogram (ECG)-gated multidetector computed tomography (MDCT) in the setting of suspected acute myocarditis compared with contrast-enhanced magnetic resonance imaging (MRI). The study group consisted of 12 consecutive patients admitted for suspected acute myocarditis less than 10 days after onset of symptoms. All patients had clinical, electrocardiographic signs, and laboratory findings consistent with the diagnosis. All patients but one (severe claustrophobia) underwent cardiac MRI using T1-weighted delayed-enhancement images after injection of gadolinium. ECG-gated MDCT was performed in all patients and included a first-pass contrast-enhanced acquisition and a delayed acquisition. MRI revealed abnormal focal or multifocal myocardial enhancement and confirmed the diagnosis in 11 patients. The first-pass MDCT acquisition showed homogenous left-ventricle contrast enhancement and absence of coronary stenosis in all patients. Delayed MDCT acquisition, performed 5 min later without reinjection of contrast medium revealed multiple areas of myocardial hyperenhancement in a focal or a multifocal pattern (six and six patients, respectively). Extent and location of hyperenhancement at MDCT correlated well with that observed at MR examination for all 11 patients evaluated by both techniques (r=0.9167, p=0.0004). These preliminary results show that ECG-gated MDCT could be a useful alternative noninvasive diagnostic test in the early phase of acute myocarditis.
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