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Myocardial biopsy findings and gadolinium enhanced cardiovascular magnetic resonance in dilated cardiomyopathy
Author(s) -
Zimmermann Oliver,
Grebe Olaf,
Merkle Nico,
Nusser Thorsten,
Kochs Matthias,
BienekZiolkowski Magdalena,
Hombach Vinzenz,
Torzewski Jan
Publication year - 2006
Publication title -
european journal of heart failure
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.149
H-Index - 133
eISSN - 1879-0844
pISSN - 1388-9842
DOI - 10.1016/j.ejheart.2005.06.001
Subject(s) - medicine , dilated cardiomyopathy , magnetic resonance imaging , gadolinium , biopsy , cardiology , myocarditis , cardiomyopathy , cardiac magnetic resonance imaging , heart failure , radiology , pathology , materials science , metallurgy
Background: In some patients suffering from dilated cardiomyopathy (DCM) magnetic resonance imaging (MRI) shows late gadolinium enhancement with variable distribution. Myocardial biopsies in DCM reveal a chronic myocardial inflammatory process in almost 50% and myocardial persistence of adenoviral or enteroviral genome in about 15% of the patients. Aims: We prospectively investigated whether the pattern of late gadolinium enhancement correlates with myocardial biopsy findings. Methods and results: 42 patients with DCM and 42 control subjects underwent contrast MRI. In the DCM group, endomyocardial biopsies were performed and evaluated for inflammation and viral genome. None of the control subjects showed late gadolinium enhancement whereas in 29 DCM patients (69%) gadolinium enhancement was detectable ( p <0.001). 21 of the DCM patients (50%) showed midwall septal enhancement, 7 patients (17%) showed a patchy distribution of hyperenhancement and 1 patient (2%) showed enhancement typical for ischemic heart disease. In myocardial biopsy analysis, 2 patients (5%) showed persistence of viral genome, 18 patients (43%) showed inflammation and in 22 patients (52%) neither virus nor inflammation was detected. The pattern of late gadolinium enhancement and myocardial biopsy findings were not significantly correlated ( p =0.854). Conclusion: MRI as a non‐invasive technique cannot replace myocardial biopsy for the differential diagnosis of DCM.