目的探讨超声心动图对右室双腔心的诊断价值。
Objective To explore the value of echocardiography in diagnosis of DCRV.
心电触发延迟时间通过观察四腔心层面RCA断面的运动以确定准确的舒张中期冠状动脉显示“运动暂停”的间期；
ECG trigger-delay was accurately set to mid-diastolic "motion freezing" by observing the movement profile of RCA cross-points on four-chamber view individually.
当心脏跳动时，一个电子信号就会从心脏的顶部传到一个心腔（位于上部），然后是位于下部的心腔，当它收缩时，也是按照这样的顺序。
When the heart beats, an electrical signal passes from the top of the heart, near the atria (upper chambers), down through the ventricles (lower chambers), and the chambers contract in that order.
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