Myocardial T1 mapping and extracellular volume quantification in patients with left ventricular non-compaction cardiomyopathy

Imagem de Miniatura
Arquivos
art_ARAUJO-FILHO_Myocardial_T1_mapping_and_extracellular_volume_quantification_in_2018.PDF (700.26 KB)
Citações na Scopus
36
Tipo de produção
article
Data de publicação
2018
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
OXFORD UNIV PRESS
Autores
BIERE, Loic
JEROSCH-HEROLD, Michael
Citação
EUROPEAN HEART JOURNAL-CARDIOVASCULAR IMAGING, v.19, n.8, p.888-895, 2018
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Aims From pathophysiological mechanisms to risk stratification and management, much debate and discussion persist regarding left ventricular non-compaction cardiomyopathy (LVNC). This study aimed to characterize myocardial T1 mapping and extracellular volume (ECV) fraction by cardiovascular magnetic resonance (CMR), and investigate how these biomarkers relate to left ventricular ejection fraction (LVEF) and ventricular arrhythmias (VA) in LVNC. Methods and results Patients with LVNC (n = 36) and healthy controls (n = 18) were enrolled to perform a CMR with T1 mapping. ECV was quantified in LV segments without late gadolinium enhancement (LGE) areas to investigate diffuse myocardial fibrosis. Patients with LVNC had slightly higher native T1 (1024 +/- 43ms vs. 995 +/- 22 ms, P = 0.01) and substantially expanded ECV (28.0 +/- 4.5% vs. 23.5 +/- 2.2%, P < 0.001) compared to controls. The ECV was independently associated with LVEF (beta = -1.3, P = 0.001). Among patients without LGE, VAs were associated with higher ECV (27.7% with VA vs. 25.8% without VA, P = 0.002). Conclusion In LVNC, tissue characterization by T1 mapping suggests an extracellular expansion by diffuse fibrosis in myocardium without LGE, which was associated with myocardial dysfunction and VA, but not with the amount of noncompacted myocardium.
Palavras-chave
left ventricular non-compaction cardiomyopathy, T1 mapping, extracellular volume, myocardial fibrosis, myocardial dysfunction, ventricular arrhythmias
URI
https://observatorio.fm.usp.br/handle/OPI/28444
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Coleções
Artigos e Materiais de Revistas Científicas - HC/InCor
Artigos e Materiais de Revistas Científicas - LIM/11
Artigos e Materiais de Revistas Científicas - LIM/44
Artigos e Materiais de Revistas Científicas - ODS/03