Overview of Coarctation of the Aorta VIDEO Diagnosis of Coarctation of the Aorta Chest x-ray and ECG Echocardiography or CT or MR angiography Diagnosis is suggested by clinical examination (including BP measurement in all 4 extremities and comparing amplitude of brachial and femoral pulses), supported by chest x-ray and ECG, and established by 2-dimensional echocardiography with color flow and Doppler studies or, in older patients with a suboptimal echocardiographic window, with CT or MR angiography.