Pathology of the Aorta and The Peripheral Arteries
The echocolor Doppler is the ideal tool for the initial study of an abdominal aortic aneurysm: the ultrasound evaluation of the axial aneurysm diameters and the exact relationship of the aneurysm with the origin of the renal arteries and the bifurcation are required.
In the hemodynamic stenosis of peripheral arteries, although the duplex ultrasound includes images, the primary parameter is the peak systolic velocity: a high-velocity systolic and diastolic signal is revealed over the stenotic segment, while downstream a post stenotic flow is present.
In these lessons the sonographic characteristics of the atherosclerotic diseases (thrombosis, aneurysms and dissections) of the abdominal aorta and of the iliac arteries are presented.
The last lesson is dedicated to pseudo aneurysms and arteriovenous fistulas. These pathologies are becoming more frequent: this may result from an increase in interventional techniques, use of anticoagulants and thrombolytics.