PURPOSE: To prospectively determine whether a relationship exists between magnetic resonance (MR) imaging abnormalities of the right ventricle (RV) and intracardiac electrophysiologic (EP) test results in @entity1 with @entity3918 . MATERIALS AND METHODS: Conventional T1-weighted single-shot black-blood fast spin-echo and gradient-echo MR imaging of the heart was prospectively performed in 32 @entity1 with @entity3918 who required EP testing. @entity1 were divided into two groups according to EP test results: (a) inducible (n = 15), indicating inducible @entity1165 , and (b) noninducible (n = 17). Morphologic and functional MR data were analyzed by two independent investigators. Nonparametric statistical methods and kappa statistics were used. RESULTS: No morphologic or functional abnormalities of the RV wall were observed in noninducible @entity1 . Increased signal intensity of the RV wall, indicative of fatty replacement, was identified in 13 inducible @entity1 . Myocardial thinning of the RV was observed in six inducible @entity1 . An overlap of morphologically abnormal areas and areas of hypo- or dyskinesis were present in 11 inducible @entity1 . RV outflow tract diameter was larger and RV ejection fraction was smaller in inducible @entity1 than in noninducible @entity1 , although differences were not significant. Interobserver agreement for MR findings was good (increased signal intensity: kappa = 0.87, P >.30 [pairwise Wilcoxon signed rank test]; myocardial thinning: kappa = 0.87, P >.30; hypo- or dyskinesis: kappa = 1.00, P >.99). There was a strong relationship between @entity854 and inducibility during EP testing (increased signal intensity, P <.001; myocardial thinning, P <.01; hypo- or dyskinesis, P <.01). CONCLUSION: The relationship between MR morphologic and functional @entity854 and EP testing suggests potential for the use of MR imaging as a noninvasive method to estimate the individual risk of @entity943 in @entity1 with @entity3918 .

Right ventricular MR abnormalities in XXXX and relationship with intracardiac electrophysiologic test findings: initial results.

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients'] @entity1165 :: ('MESH:D017180', 'Disease') :: ['ventricular tachyarrhythmias'] @entity854 :: ('MESH:D018376', 'Disease') :: ['RV abnormalities', 'MR abnormalities'] @entity3918 :: ('MESH:D009223', 'Disease') :: ['myotonic dystrophy'] @entity943 :: ('MESH:D001145', 'Disease') :: ['arrhythmia']
@entity3918 :: (MESH:D009223,Disease) :: ['myotonic dystrophy']
