Comparison of Global Longitudinal Strain Measurement Among Recent Version Echocardiographic Machines and Vendor Independent Strain Analysis Software

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  • Hirata Yukina
    Ultrasound Examination Center, Tokushima University Hospital
  • Nishio Susumu
    Ultrasound Examination Center, Tokushima University Hospital
  • Kusunose Kenya
    Department of Cardiovascular Medicine, Tokushima University Hospital
  • Fujita Yukina
    Clinical laboratory center, Yoshinogawa Medical Center
  • Arase Miharu
    Department of Cardiovascular Medicine, Tokushima University Hospital
  • Yamada Hirotsugu
    Department of Community Medicine for Cardiology, Tokushima University Graduate School of Biomedical Sciences
  • Sata Masataka
    Department of Cardiovascular Medicine, Tokushima University Hospital

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  • 最新の心エコー図診断装置および装置非依存性ストレイン解析ソフトウェアを用いたGlobal Longitudinal Strain計測の装置間差に関する検討

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Abstract

<p>Purpose: Global longitudinal strain (GLS) assessed using the two-dimensional (2D) speckle tracking method is considered to be an accurate and reproducible measurement method for assessing the LV contractility. However, the measurement variability across different ultrasonography machines has been discussed. This study aimed to determine whether the measurement variability among newer echocardiographic machines is lower than that reported in previous studies.</p><p>Subjects and Methods: We enrolled 34 healthy volunteers. Apical images were acquired using three types of latest ultrasonography machines at the Tokushima University Hospital. The GLS values were assessed and compared using the latest version of the vendor-specific software and one vendor-independent software packages (EchoInsight ver. 2.2.6.2230, Epsilon).</p><p>Results and Discussion: The upgraded vendor-specific software showed good correlation in GLS [GE vs. Philips (r＝0.678, p＜0.001, Bias 1.1%, 2SD ±2.9%), GE vs. Canon (r＝0.690, p＜0.001, Bias 0.4%, 2SD ±2.5%), Philips vs. Canon (r＝0.551, p＜0.001, Bias 1.5%, 2SD ±3.2%)]. The GLS measured using vendor-independent software provided greater degree of correlation than that with each software alone.</p><p>Conclusion: The measurement variability of GLS between devices was superior than that reported previously. Moreover, the GLS measured using the images acquired using each device with EchoInsight showed good inter-device correlation.</p>

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