Chamberlain Robert, Shiino Kenji, Scalia Gregory M, Sabapathy Surendran, Chan Jonathan
Department of Cardiology The Prince Charles Hospital Brisbane Australia.
School of Medicine and Menzies Health Institute Queensland Griffith University Gold Coast Australia.
Australas J Ultrasound Med. 2020 Oct 14;24(1):48-57. doi: 10.1002/ajum.12229. eCollection 2021 Feb.
One of the main limitations incorporating strain imaging into widespread clinical practice is inter-vendor incompatibility. This poses a problem when serial strain measurements are required in a multi-vendor echocardiography laboratory.
This study sought to compare the variability of two-dimensional speckle-tracking global and regional longitudinal strain using vendor-specific software and vendor-independent software from images acquired by two different commercially available ultrasound systems. Forty subjects underwent two sequential echocardiographic acquisitions using different ultrasound systems (GE Vivid E9 and Philips iE33). Global longitudinal strain and regional peak longitudinal strain were derived using vendor-specific software (EchoPAC BT 13 v201 and QLAB version 10.3) and vendor-independent software (TomTec Image Arena version 4.6). Agreement and reproducibility of global and regional strain between vendor-specific and vendor-independent software were assessed by independent blinded observers.
Global longitudinal strain derived from vendor-independent software was comparable to global longitudinal strain derived from vendor-specific software, whilst regional strain was lower in agreement compared to global longitudinal strain. There was good overall agreement and high inter- and intra-observer reproducibility using vendor-independent software for global longitudinal strain and regional strain.
Vendor-independent software provides good agreement with vendor-specific software for global longitudinal strain. However, minor variability exists for regional strain measurements between vendor-independent and vendor-specific software. Good agreement of strain measurements derived by vendor-independent software suggests vendor-independent software could potentially be useful for serial follow-up of global longitudinal strain.
将应变成像纳入广泛临床实践的主要限制之一是不同厂商设备之间的不兼容性。在多厂商超声心动图实验室中需要进行连续应变测量时，这就会带来问题。
本研究旨在比较使用特定厂商软件和独立于厂商的软件，对两种不同商用超声系统采集的图像进行二维斑点追踪整体和局部纵向应变的变异性。40名受试者使用不同的超声系统（GE Vivid E9和飞利浦iE33）进行了两次连续的超声心动图检查。使用特定厂商软件（EchoPAC BT 13 v201和QLAB版本10.3）和独立于厂商的软件（TomTec Image Arena版本4.6）得出整体纵向应变和局部峰值纵向应变。由独立的盲法观察者评估特定厂商软件和独立于厂商的软件之间整体和局部应变的一致性及可重复性。
独立于厂商的软件得出的整体纵向应变与特定厂商软件得出的整体纵向应变相当，而局部应变与整体纵向应变相比一致性较低。使用独立于厂商的软件测量整体纵向应变和局部应变时，观察者之间及观察者内部的总体一致性良好且可重复性高。
独立于厂商的软件在整体纵向应变方面与特定厂商软件具有良好的一致性。然而，独立于厂商的软件和特定厂商软件在局部应变测量方面存在微小差异。独立于厂商的软件得出的应变测量结果具有良好的一致性，这表明该软件可能对整体纵向应变的连续随访有用。
