Heard the opinion that the ultrasound screening of teenagers which according to the order of Moscow Department of Healthcare includes echocardiography, can be carried out without Doppler to increase screening speed and amount of schoolers per day.
For example, two different teenagers with aortic regurgitation, which can not be seen without Doppler, even with Doppler it' s hard to see.
PS. One of teenagers has also medium tricuspid regurgitation.