AI Article Synopsis
- This study examined the effectiveness of high frame rate speckle-tracking echocardiography (STE) at around 200 fps compared to the conventional rate of about 50 fps in patients with normal heart function.
- Results showed that using the higher frame rate (rHi-FR) resulted in significantly higher absolute strain values than the traditional frame rate (Reg-FR), with strong agreement in measurements between different observers.
- The findings suggest that improved temporal resolution of rHi-FR allows for more accurate measurements of myocardial strain, though further research is needed to explore its usefulness in conditions like tachycardia.
Article Abstract
The accuracy of speckle-tracking echocardiography (STE) depends on temporal resolution. The goal of this study was to demonstrate the feasibility of relatively high frame rate (rHi-FR) (~200 fps) for STE. In this prospective study, echocardiographic images were acquired using clinical scanners on patients with normal left ventricular systolic function using rHi-FR and conventional frame rate (Reg-FR) (~50 FPS). GLS values were evaluated on apical 4-, 2- and 3-chamber images acquired in both rHi-FR and Reg-FR. Inter-observer and intra-observer variabilities were assessed in rHi-FR and Reg-FR. There were 143 echocardiograms evaluated in this study. The frame rate of rHi-FR was 190 ± 25 and Reg-FR was 50 ± 3, and the heart rate was 71 ± 13. Absolute strain values measured in rHi-FR were significantly higher than those measured in Reg-FR (all < 0.001). Inter-observer and intra-observer correlations were strong in both rHi-FR and Reg-FR. We demonstrated that absolute strain values were significantly higher using rHi-FR when compared with Reg-FR. It is plausible that higher temporal resolution enabled the measurement of myocardial strain at desired time point. Further investigations are necessary to evaluate the value of rHi-FR to assess myocardial strain in the setting of tachycardia.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8153006 | PMC |
| http://dx.doi.org/10.3390/jcm10102095 | DOI Listing |
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