Figure 4From: Serendipitous diagnosis of aortic coarctation by bilateral parvus et tardus renal Doppler flow pattern (A) Schematic view of different waveforms was showed according to stenosis location (From third edition of Dignostic Ultrasound by Rumak C. M, et al.). (B) Various types of Doppler waveforms. Type A and B are normal types, but type C patterns called parvus-tardus (From second edition of Dignostic Ultrasound by Rumak C. M, et al.).Back to article page