Quantitative Evaluation of the Amount of Delayed Myocardial Enhancement as a Predictor of Systolic Dysfunction
نویسندگان
چکیده
30 patients with delayed contrast enhancement in patterns suggestive of myocardial infarctions were reviewed. Infarct mass was quantitatively measured using short axis images obtained in the delayed phase of gadopentetate administration. Left ventricular mass and ejection fraction were measured using short axis, steady state free precession images. A relationship is drawn between increased mass of infarction and decreased left ventricular ejection fraction. For each gram of infarct, there is a 0.5 % reduction in ejection fraction (EF = 50 - (0.48 x gm infarcted myocardium); r²= 0.49). For each % increase of infarcted myocardium, there is a 0.67 % reduction in ejection fraction (EF = 50 - (0.67 x percent of infarcted myocardium); r²= 0.39). Left ventricular ejection fraction correlates inversely with the mass of myocardium with delayed enhancement on cardiac MRI.
منابع مشابه
Echocardiographic Evaluation of left Ventricular Function and Geometry in Pediatric Patients with Kidney Transplantation
Extended abstract Echocardiographic Evaluation of Left Ventricular Function and Geometry in Pediatric Patients with Kidney Transplantation Cardiovascular disease (CVD) is an important, leading cause of mortality and morbidity in patients with chronic kidney disease (CKD) as well as in renal transplant recipients. Cardiovascular complications become more important in children because of the i...
متن کاملThe role of oral dipyridamole stress gated SPECT in assessing the response of the left ventricle to stress: Re-evaluation of an old method
Introduction: We aimed to assess whether the vasodilator effect of oral dipyridamole on the left ventricular systolic function in patients with suspected CAD is different from that of intravenous (IV) dipyridamole using Tc-99m MIBI myocardial perfusion gated SPECT. Methods: Eighty-nine patients (17 M / 72 W; 61 ± 10 years) were enrolled in this study. The patients underwent a dipyridamole stre...
متن کامل[Reliability of cardiac magnetic resonance imaging indicators of myocardial viability for predicting the recovery of systolic function after a first acute myocardial infarction with a patent culprit artery].
INTRODUCTION AND OBJECTIVE To assess the reliability of early analysis of the most frequently used cardiac magnetic resonance (CMR)-derived indexes for predicting systolic function recovery and ventricular remodeling in patients after a first acute myocardial infarction with a patent culprit artery. PATIENTS AND METHOD 17 patients were studied with an initial CMR protocol that included region...
متن کاملEvaluating the Effect of Injected Dose of 99mTc- MIBI on the Quantitative Parameters of Myocardial Perfusion Imaging
Background: 99mTc-MIBI cardiac perfusion scanning is recognized as a clinically useful method in evaluating coronary artery disease. By the implementation of new imaging techniques and systems, it seems possible to obtain high-quality images with a lower dose of radiopharmaceuticals. The purpose of this study was to evaluate the effect of injection dose of 99mTc-MIBI on quantitative parameters ...
متن کاملLeft ventricular basal myocardial scarring detected by delayed enhancement magnetic resonance imaging predicts outcomes after surgical therapies for patients with ischemic mitral regurgitation and left ventricular dysfunction.
BACKGROUND Treatment of heart failure by surgical procedures such as mitral annuloplasty and left ventricular (LV) restoration is increasingly applied to patients with ischemic mitral regurgitation (IMR) and LV dysfunction. The clinical efficacy of delayed enhancement magnetic resonance imaging (DE-MRI) was studied to predict LV functional recovery and adverse outcomes after these therapies. ...
متن کامل