Figure 1. (a) Carotid Doppler ultrasound shows stenosis of approximately 50-70% of the left common carotid artery. Bilateral, permeable vertebral circulation is shown. (b) Angioresonance with contrast in the neck is shown, and the arrow indicates a decrease in the caliber of the left common carotid before the bifurcation and the left subclavian artery. (c) Angioresonance with contrast in the neck with a side view is shown, and the arrow indicates caliber thickening of the origin in the right brachiocephalic trunk that could correspond to TA.