TVI模式下测量12个节段从QRS波群起始部到射血期峰值的时间(time to peak systolic,Ts),计算标准差(Ts-SD-12)。将左室Ts-SD-1232.6ms作为左室内收缩不同步的指标。
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很多请求类型在可预测的峰值期(如正常的业务时间内)都要多很多。
Many types of requests are much higher during predictable peak periods, such as during normal business hours.
用12个区域来测量收缩期圆周应变时间和应变率，并用应不峰值时间和应不率的标准差来表示心肌不同步。
Time to peak systolic circumferential strain and strain rate were measured in 12 segments, and myocardial dyssynchrony was expressed as the SD of time to peak strain and strain rate.
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