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Doppler ultrasonography of the lower extremity arteries: anatomy and scanning guidelines
Doppler US Of Lower Limb arteries app, is a detailed description on "how to " perform doppler ultrasound on the lower limb arteries, it is an invaluable for all healthcare professionals for providing or interpreting ultrasound.
This app it encompasses everything you need to know about the anatomy, normal ultrasound and pathological appearance of the lower limb arteries.
Doppler ultrasonography of the lower extremity arteries is a valuable technique, although it is less frequently indicated for peripheral arterial disease than for deep vein thrombosis or varicose veins. Ultrasonography can diagnose stenosis through the direct visualization of plaques and through the analysis of the Doppler waveforms in stenotic and poststenotic arteries. To perform Doppler ultrasonography of the lower extremity arteries, the operator should be familiar with the arterial anatomy of the lower extremities, basic scanning techniques, and the parameters used in color and pulsed-wave Doppler ultrasonography.
Imaging modalities for evaluating peripheral arterial disease in the lower extremities include computed tomography (CT) angiography, conventional angiography, and Doppler ultrasonography (US). Three-dimensional CT angiography provides information about atherosclerotic calcifications and the extent of stenosis or occlusion of the arteries. CT angiography has some advantages, such as a shorter examination time, the ability to evaluate the iliac artery, and the fact that it is less affected by the operator’s experience. Conventional angiography is used for vascular interventions such as angioplasty or stent application, as well as in the diagnosis of peripheral arterial disease. Doppler US is the only noninvasive technique that does not require contrast enhancement, preparation of the patient before the study, or radiation exposure. Doppler US is a good method for screening and follow-up, as well as for the definitive diagnosis of peripheral arterial disease. Color Doppler US can easily identify arteries by finding round objects with regular pulsation and can be used to detect stenotic or occluded segments. Pulsed-wave Doppler US can show the exact flow velocity of each arterial segment and determine the degree of severity of the stenosis based on an analysis of the pulsed-wave Doppler spectral waveform.
Knowledge of the ultrasonographic anatomy of the lower extremity arteries and the corresponding anatomical landmarks is essential for performing Doppler US. In this article, we review the basic scanning techniques of color and pulsed-wave Doppler US for the lower extremity arteries and the spectral analysis of normal and stenotic arteries on pulsed-wave Doppler US.
Last update
April 12, 2020