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- W2023460135 abstract "Background: Despite the importance of ejection fraction (EF) in clinical decision-making, this calculation is time-consuming and a simple technique for quantifying EF would be useful. We compared automated EF measurements and mean strain from speckle tracking with EF measured by magnetic resonance imaging (MRI).Methods: Fifty patients with previous infarction underwent echocardiography (Vivid 7, GE) and MRI (Sonata, Siemens). Speckle tracking was used off-line to define end-diastolic and systolic borders for automated measurement of EF (method of discs), as well as measuring global longitudinal strain (GLS), averaged from all segments. Tracking quality (TQ) was measured on a scale of 1–3. MRI was performed using true-FISP, and volumes and EF were measured using 3D software (Auckland University).Results: Average TQ was 1.1, permitting derivation of global strain from all segments. GLS showed a significant linear correlation with MRI-EF (r = 0.80, p < 0.0001) (Fig. 1). Automated EF correlated less well with MRI-EF (r = 0.63, p < 0.0001) (Fig. 2). Of 12 patients with MRI-EF < 40%, 9 (75%) had automated EF < 40% and 10 (83%) had global strain <14%.Conclusions: Speckle tracking is a feasible technique for automated measurement of LV function. In these patients with regional wall motion abnormalities, global strain correlated better with MRI-EF than did automated EF, reflecting the benefit of a geometry-independent parameter." @default.
- W2023460135 created "2016-06-24" @default.
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- W2023460135 date "2007-01-01" @default.
- W2023460135 modified "2023-09-26" @default.
- W2023460135 title "Automated Ejection Fraction from Two-Dimensional Strain: Validation Against MRI" @default.
- W2023460135 doi "https://doi.org/10.1016/j.hlc.2007.06.083" @default.
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