2-dimensional transthoracic echocardiogram (2D TTE) from the apical 4 chamber view showing errors in right ventricular (RV) area tracing

(A) Proper tracing of the right ventricular (RV) endocardial outline.
(B) Underestimation of RV size due to exclusion of noncompacted RV trabeculations.
(C) Underestimation of RV size due to exclusion of the RV apex by incorrection tracing along the moderator band.
(D) Overestimation of RV size due to measurement on the RV-modified view with medial transducer placement.