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Updated: Aug 15, 2026

An Approach to Point-Of-Care Ultrasound Evaluation of the Abdominal Aorta
Published on: September 8, 2023
Duplex ultrasonography of vertebral and subclavian arteries
Vijay G Kalaria1, Sony Jacob, William Irwin
1Krannert Institute of Cardiology, Indiana University, Indianapolis, Indiana, USA. vkalaria@iupui.edu
Abstract:
Duplex ultrasonography of the vertebral artery is an integral part of extracranial cerebrovascular screening and provides noninvasive diagnostic clues for subclavian or vertebral artery stenosis. This review describes technique for the ultrasound examination of the vertebral and subclavian arteries. Duplex images from various patients are used to illustrate a spectrum of hemodynamic changes that occur in the vertebral artery Doppler signal caused by subclavian artery stenosis and subclavian-vertebral steal.
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