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Figure 3 (A) Continuous-wave Doppler of the descending thoracic aorta showing prominent "diastolic tail" pattern before coarctation stenting and regression to a smaller "diastolic tail" in the same patient after stenting. (B) Pulsed-wave Doppler of the abdominal aorta showing continuous-flow pattern before coarctation stenting and return to pulsatile flow in the same patient after coarctation stenting.