J Postgrad Med Close
 

Figure 5: Delayed phase of the arch aortogram showing the right subclavian artery (black arrow heads) being opacified through retrograde flow from the right vertebral artery and collaterals of the right external carotid artery

Figure 5: Delayed phase of the arch aortogram showing the right subclavian artery (black arrow heads) being opacified through retrograde flow from the right vertebral artery and collaterals of the right external carotid artery