Transthoracic echocardiographic apical view transducer position and standard images

(A) Orientation of the probe indicator.
(B) Direction of the ultrasound beam on the heart.
(C) Identification of heart chambers on apical view.
(D) Echocardiographic appearance of the apical view.

RV: right ventricle; LV: left ventricle; RA: right atrium; LA: left atrium; DA: descending aorta.

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