Arrhythmogenicrightventriculardysplasia/cardiomyopathy(ARVD/C)ischaracterizedbyfibro-fattyreplacementoftherightventricle.However,thefeasibilityandsignificanceofmyocardialfibrosisdetec-tedbydelayedenhancement(DE)using3.0Tmagneticresonanceimaging(MRI)in.ARVD/Cisseldomlystudied.MethodsTwenty-sevenconsecutivepatientswereprospectivelyevaluatedforARVD/C.Magneticreso-nanceimagingwasperformedona3.0Tscanner.Tenminutesafterintravenousadministrationof0.2mmol/kgofgadodiamide,DE-MRIwasobtained.DiagnosisofARVD/CwasbasedupontheTaskForcecriteriaandin-cludedMRIfindings.ResultsSeventeen(59%)of27patientsmettheTaskForcecriteriaforARVD/C.Rightven-tricleDEwasfoundinall(100%)ARVD/Cpatientscomparedwithnone(0%)ofthe10patientswithoutARVD/C(P<0.001).AdditionalleftventricularDEwasfoundin8/17ARVD/Cpatientswhilewithoutleftventricularmor-phologicalandfunctionalabnormalitiesdetectedbyechocardiographyorMRI.ConclusionsDEusing3.0TMRIcouldeffectivelydetectmyocardialfibrosisintherightandleftventricularmyocardiuminARVD/Cpatients.DetectionofmyocardialfibrosismayhaveanimportantclinicalsignificanceinARVD/Cdiagnosis.Histologicalleftventriclein-volvementmaybeeasilymissedbyechocardiography.
