Heart * Heart

The long axis view (here shown from parasternal position) provides a reliable picture of the function of the basilar portions of the anterior septum and posterior walls. The biphasic diastolic motion of the mitral valve opening is evident. The view of two of the aortic leaflets shows their rapid systolic opening and a diastolic closed position arising from a position at the base of the anterior mitral leaflet.




This view permits evaluation of the motion of the anterior and inferior left ventricular myocardial segments. The mid-portion of the mitral valve motion is also evident.









The myocardial segments are presented en-face with the anterior and antero-septum presented superiorly and the posterior and inferior walls in the lower portion of the wedge view. The contractile motion should be symmetric toward the mid-portion of the myocardial cavity.





The three leaflets of the aortic valve are seen "en face" with the left atrium behind the aortic root. During a portion of the cycle, it is possible to briefly see the opening motion of the pulmonary valve anterior to the aorta.




This apical view offers a symmetric display of the two large atrio-ventricular valves appearing to lie horizontally on the screen along the plane of the atrio-ventricular groove. By convention the left ventricle is displayed to the viewer's right. The interventricular septum and interatrial septum form what is seen as the verticle column of tissue in the middle of the image. The interventricular septum tends to contract toward the left ventricular cavity during systole because of the higher pressure requirements of that chamber. A "five" chamber view involves tilting the image plane superiorly to show the base of the aortic valve and the left ventricular outflow tract.





The subcostal view can be made to appear as if it were a tilted 4 chamber apical view. It provides nearly a perpendicular view of the interatrial septum which permits it to use doppler to interrogate potential shunts between those chambers



The long axis view (here shown from parasternal position) provides a reliable picture of the function of the basilar portions of the anterior septum and posterior walls. The biphasic diastolic motion of the mitral valve opening is evident. The view of two of the aortic leaflets shows their rapid systolic opening and a diastolic closed position arising from a position at the base of the anterior mitral leaflet.

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