Objective To evaluate the accuracy of real time two dimensional echocardiographic acoustic quantification (AQ) for measurement of the left atrial (LA) function.
目的评价超声声学定量（AQ ）技术测量左心房功能的准确性。
Objective To evaluate the accuracy of real time two dimensional echocardiographic acoustic quantification (AQ) for measurement of the left atrial (LA) function.
目的评价超声声学定量（AQ ）技术测量左心房功能的准确性。
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