The real time high frame rate (HFR) 2-dimensional ultrasound system, T5, at Duke University is capable of imaging at up to 1000 images per second for adult cardiac imaging. A method for detecting and visualizing the mechanical contraction fronts using HFR echocardioagraphy-derived Strain Rate Image (SRI) was described in 26 patients. The Tissue Shortening Onset front durations for echocardiographic normal patients were significantly shorter than conduction disorder patients with left bundle branch block (LBBB) with intrinsic conduction and conduction disorder patients without LBBB (non-LBBB) with simulated LBBB (sLBBB). Echocardiographic normal patients had significantly higher correlation coefficients between their SRIs and spatially inverted versions of themselves compared to non-LBBB patients with intrinsic conduction and sLBBB. In conclusion, SRIs could spatially resolve contractile event fronts in patients.

杜克大学的实时高帧率 (HFR) 二维超声系统 T5 能够以每秒高达 1000 张图像的速度进行成人心脏成像。在 26 名患者中描述了一种使用 HFR 超声心动图衍生的应变率图像 (SRI) 检测和可视化机械收缩前沿的方法。超声心动图正常患者的组织缩短起始波前持续时间明显短于具有内在传导的左束支传导阻滞 (LBBB) 和没有 LBBB 的传导障碍患者 (non-LBBB) 与模拟 LBBB (sLBBB) 的传导障碍患者。与具有内在传导和 sLBBB 的非 LBBB 患者相比，超声心动图正常患者的 SRI 与自身空间倒置版本之间的相关系数显着更高。综上所述，