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Page 26 of 41 Rao. Vessel Plus 2022;6:25 https://dx.doi.org/10.20517/2574-1209.2021.92
Figure 45. Echo-Doppler studies in apical four-chamber (A, B) and parasternal long-axis (C) projections demonstrating a very small
ventricular septal defect (VSD) (arrows in A-C) with increased flow velocity through the VSD by continuous wave Doppler (D). Note
partial occlusion of the VSD (A) due to aneurismal formation. The left atrium (LA) and left ventricle (LV) are labeled. Reproduced from
Ref. [34] .
Figure 46. Echo-Doppler studies in parasternal long-axis (A, D) and apical four-chamber (B, C) views of a ventricular septal defect in
the process of spontaneous closure. Note the aneurism (Anu) seen by two-dimensional echo (A-C). Tiny residual shunt (RS) is seen by
color flow imaging (C). There is high Doppler velocity (4.3 m/s) by continuous wave Doppler (D) suggesting that the residual defect is
small. Ao: Aorta; LA: left atrium; LV: left ventricle; RV: right ventricle.
