fig28

Figure 28. Suprasternal notch crab-view of the pulmonary veins (PV) draining into the left atrium (LA) are shown by color flow imaging. The LA is in the center with four PVs showing color flow; the upper PVs show blue color while both lower PVs show red color. Each of the PVs is also pulse-Doppler interrogated during any routine study and normal Doppler velocity recorded (not shown). Reproduced from Ref.^[21].