Figure 55
From: Imaging of all three coronary arteries by transthoracic echocardiography. an illustrated guide
Duplex ultrasound performed within area shown in Fig. 53. Maximal flow velocity of 0,4 m/s was recorded. Maximal flow velocity ratio (velocity within stenosis divided by velocity proximal to stenosis) was 3.8 proving hemodynamic significance of the stenosis. Tight middle RCA stenosis was later found on coronary angiography.