Cardiovascular magnetic resonance based diagnosis of left ventricular non-compaction cardiomyopathy: impact of cine bSSFP strain analysis.

ABSTRACT: BACKGROUND:Investigation of the myocardial strain characteristics of the left ventricular non-compaction (LVNC) phenotype with cardiovascular magnetic resonance (CMR) feature tracking. METHODS:CMR cine balanced steady-state free precession data sets of 59 retrospectively identified LVNC phenotype patients (40?years, IQR: 28-50?years; 51% male) and 36 healthy subjects (39?years, IQR: 30-47?years; 44% male) were evaluated for LV volumes, systolic function and mass. Hypertrabeculation in patients and healthy subjects was evaluated against established CMR diagnostic criteria. Global circumferential strain (GCS), global radial strain (GRS) and global longitudinal strain (GLS) were evaluated with feature-tracking software. Subgroup analyses were performed in patients (n =?25) and healthy subjects (n =?34) with normal LV volumetrics, and with healthy subjects (n =?18) meeting at least one LVNC diagnostic criteria. RESULTS:All LVNC phenotype patients, as well as a significant proportion of healthy subjects, met morphology-based CMR diagnostic criteria: non-compacted (NC): compacted myocardial diameter ratio?>?2.3 (100% vs. 19.4%), NC mass?>?20% (100% vs. 44.4%) and?>?25% (100% vs. 13.9%), and NC mass indexed to body surface area?>?15?g/m2 (100% vs. 41.7%). LVNC phenotype patients demonstrated reduced GRS (26.4% vs. 37.1%; p 

SUBMITTER: Dreisbach JG 

PROVIDER: S-EPMC6990516 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature