Coarctation of the aorta – Diagnosis and treatment – Mayo …

If the coarctation of the aorta is severe, the ECG may show thickening of the walls of the lower heart chambers (ventricular hypertrophy). Chest X-ray. A chest X-ray creates images of your heart and lungs. A chest X-ray might show a narrowing in the aorta at the site of the coarctation or an enlarged section of the aorta or both.

https://www.mayoclinic.org/diseases-conditions/coarctation-of-the-aorta/diagnosis-treatment/drc-20352535