Appreciating the Strengths and Weaknesses of Transthoracic Echocardiography in Hemodynamic Assessments

<table>Schematic diagram showing proper and improper ultrasound longitudinal planes in measuring left ventricular outflow tract (LVOT) diameter. Oblique plane is resulted from a tilted angle from the proper plane, while a parallel shift in ultrasound plane results in a tangential planes. Both oblique and tangential planes give rise to underestimation of LVOT diameter. The same is true for measuring inferior vena cava diameter.</table>

Cardiology Research and Practice

fig2

Figure 2

Figure 2: Appreciating the Strengths and Weaknesses of Transthoracic Echocardiography in Hemodynamic Assessments 