Naslov
Variability in the Assessment of Myocardial Strain Patterns: Implications for Adequate Interpretation

Autori
Duchateau Nicolas ; Lončarić Filip ; Čikeš Maja ; Doltra Adelina ; Sitges Marta ; Bijnens Bart

Izvornik
Ultrasound in medicine & biology (0301-5629) 46 (2020), 2; 244-254

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Educational course ; Myocardial strain ; Reproducibility ; Spatiotemporal analysis ; Speckle tracking.

Sažetak
Variability in global and regional peak strain has been thoroughly studied, but variability in spatiotemporal myocardial strain patterns has not been studied as well. This study reports on such variability and its implications for adequate disease interpretation. Forty in-training operators, distributed on 20 workstations, analyzed six cases with representative deformation patterns with commercial speckle tracking. Inter- operator differences were quantified through the variability in myocardial delineations, spatiotemporal longitudinal strain patterns and peak longitudinal strain. Intra-operator differences were assessed similarly using 10 repeated measurements from a single clinician expert. Delineations varied mainly along the lateral wall and at the valve level. Peak longitudinal strain variability was low to moderate. The spatiotemporal strain patterns were consistent despite high variability at the apex and near the valve. The results indicate that relevant pattern assessment is possible despite heterogeneous experience with speckle tracking and that careful interpretation of pattern abnormalities should be recommended before a more systematic quantitative analysis.

Izvorni jezik
Engleski

Znanstvena područja
Kliničke medicinske znanosti

POVEZANOST RADA