Tissue synchronization imaging and tissue tracking are very sensitive to time events, and can observe the ventricular activation sequence, delay contraction and asynchronization in LBBB.

• 结论LBBB者心肌运动不同步明显，组织同步成像和组织追踪技术能敏感检测到心室激动顺序，出现收缩延迟及收缩不同步。