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Advances in transthoracic Doppler echocardiography enable noninvasive measurements of coronary flow velocity and coronary flow velocity reserve (CFVR) in the posterior descending coronary artery (PD).

circulation journal

Using Transthoracic Doppler Echocardiography to Diagnose Reduced Coronary Flow Velocity Reserve in the Posterior Descending Coronary Artery in Children With Elevated Right Ventricular Pressure