Speckle-Tracking Echocardiography with Novel Imaging Technique of Higher Frame Rate

Journal of Clinical Medicine

卷:10

CynthiaC. Taub¹  Muhammad Farooq¹  MarioJ. Garcia¹  Yun Xing¹  Wayne Humphrey¹  MohammadHashim Mustehsan¹  Mohammed Makkiya¹  Kana Fujikura¹ 

[1] Division of Cardiology, Montefiore Medical Center, Albert Einstein College of Medicine, 111 East 210th Street, Bronx, NY 10467, USA;

关键词: echocardiography;    speckle-tracking;    frame rate;    global longitudinal strain;    left ventricle;   

DOI  :  10.3390/jcm10102095

来源: DOAJ

【 摘 要 】

Background: 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. Methods: 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. Results: 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 p < 0.001). Inter-observer and intra-observer correlations were strong in both rHi-FR and Reg-FR. Conclusions: 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.

【 授权许可】

Unknown