18:15 〜 19:15
[II-P22-09] Feature tracking磁気共鳴によって評価された右心系疾患における心筋機能障害の臨床的意義
キーワード：RV myocardial dysfunction, strain, feature tracking MR
Objective: The objective of this study was evaluation for clinical and prognostic value of right ventricular strain analysis in right ventricular heart disease by cardiovascular magnetic resonance (CMR) using cine-based feature tracking (FT).
Methods: Global longitudinal, radial and circumferential strain / strain rate (SR) were measured on the 4-chamber and short-axis views at the basal, mid, and apical levels of RV in 5 pulmonary hypertension (PH) (27.6±14.2 years; group A), 5 repaired tetralogy of Fallot without PH (29.4±10.3 years; group B) and normal subjects (32.7±8.6 years; group C).
Results: All strain and SR values were reduced in group A compared group B and C. GLS was reduced in group B compared to group C while GCS was preserved. GLS and GCS were correlated with right ventricular ejection fraction in all groups.
Conclusions: Quantification of right ventricular strain and SR were feasible in the majority of patients by CMR using FT, suggesting that this approach could have clinical relevance to understand myocardial mechanics in right ventricular heart disease.
Methods: Global longitudinal, radial and circumferential strain / strain rate (SR) were measured on the 4-chamber and short-axis views at the basal, mid, and apical levels of RV in 5 pulmonary hypertension (PH) (27.6±14.2 years; group A), 5 repaired tetralogy of Fallot without PH (29.4±10.3 years; group B) and normal subjects (32.7±8.6 years; group C).
Results: All strain and SR values were reduced in group A compared group B and C. GLS was reduced in group B compared to group C while GCS was preserved. GLS and GCS were correlated with right ventricular ejection fraction in all groups.
Conclusions: Quantification of right ventricular strain and SR were feasible in the majority of patients by CMR using FT, suggesting that this approach could have clinical relevance to understand myocardial mechanics in right ventricular heart disease.