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A novel extension of active appearance models (AAMs) for automated border detection in echocardiographic image sequences is reported. The active appearance motion model (AAMM) technique allows fully automated robust and time-continuous delineation of left ventricular (LV) endocardial contours over the full heart cycle with good results. Nonlinear intensity(More)
OBJECTIVES This study was designed to evaluate the relative prognostic significance of restrictive left ventricular (LV) filling after acute myocardial infarction. BACKGROUND Data regarding the contribution of diastolic dysfunction to prognosis after myocardial infarction are limited, and the additional value over the assessment of systolic dysfunction is(More)
OBJECTIVES We evaluated the use of fluorine-18 fluorodeoxyglucose (FDG) and single-photon emission computed tomography (SPECT) to predict improvement of left ventricular ejection fraction (LVEF) after revascularization. BACKGROUND FDG SPECT has recently been proposed for assessment of myocardial viability. However, FDG SPECT still awaits validation in(More)
RATIONALE AND OBJECTIVE Shape analysis of endocardial contour sequences from echocardiograms can provide classification of wall motion abnormalities (WMA). MATERIALS AND METHODS We previously reported on active appearance motion models (AAMM) for automated detection of endocardial contours in sequences of echocardiograms. The shape analysis of AAMM(More)
OBJECTIVE To evaluate whether the presence of viable myocardium, detected by low dose dobutamine echocardiography, limits the likelihood of left ventricular dilatation in patients with acute myocardial infarction. PATIENTS 107 patients were studied by low dose dobutamine echocardiography at (mean (SD)) 3 (1) days after acute myocardial infarction. Cross(More)
BACKGROUND Successful thrombolysis can prevent left ventricular dilatation after acute myocardial infarction. However, in almost 30% of patients, reocclusion occurs. The aim of this study was to assess the long-term implications of reocclusion on left ventricular size and function. METHODS AND RESULTS Fifty-six patients were studied with two-dimensional(More)
The prognostic value of myocardial viability early after acute myocardial infarction (AMI) is still controversial, depending on the patient under study and the outcome end point considered. Furthermore, the relative prognostic importance of viability compared with indicators of systolic left ventricular (LV) dysfunction is not known. One hundred(More)