MRI diagnosis of arrhythmogenic right ventricular cardiomyopathy / 第三军医大学学报

ABSTRACT

Objective To discuss the utility of MRI in evaluating arrhythmogenic right ventricular cardiomyopathy(ARVC).Methods Nine patients of ARVC who received treatment in our hospital from January 2005 to May 2008,were retrospectively analyzed.They all underwent MRI by using GE signa 1.5 Tesla CV/I MR system.White blood technique(Fast cine sequence) were performed in short axis view,four-chamber view,and long axis view of two ventricles.Black blood techniques(Double IRFSE and Triple IRFSE) were performed in short axis view and long axis view of the right ventricle.Results MRI displayed thinning of the right ventricular(RV) wall(9 cases),dilatation of the RV(8 cases),fat signal intensity of the RV wall in DIRFS and irregular insula or continuity breaking in TIRFSE(3 cases),dilatation of the left ventricle(LV)(2 cases),a bit thickening of ventricular septum(1 case),enlargement of the outflow of the RV(2 cases),and ventricular wall aneurysm formation(2 cases).Their positions involved apex of the right ventricle(6 cases),facies diaphragmatica(4 cases),anterior ventricle(4 cases),infundibulum(4 cases) and the papillary muscle of the RV(1 case).Conclusion Cardiac MRI is the most specific and sensitive examination technique in diagnosing of ARVC,which can present structural and functional changes and the quality,degree,range of the disease.We recommend cardiac MRI if ARVC is suspected.