[Aortic isthmic stenosis: clinical study and postoperative follow-up by MRI. Report of a case].

A case report. Nuclear Magnetic Resonance (NMR) is the most recent non-invasive diagnostic technique which can provide high quality anatomic and functional data. The absolute safety of the method make it suitable for follow-up of patients who have undergone aortic surgery. The authors report the case of a 12-year-old girl suffering from isthmic coarctation of the aorta for which both traditional methods (echocardiography and angiography) and NMR were used. Following bypass surgery with a dacron implant in the stenotic tract of the aorta, the patient was followed up using transthoracic echocardiogram and NMR. The latter method was found to be most efficacious in providing anatomic and functional information after surgery, enabling an optimal follow-up of these patients.