Diagnosis of congenital absence of internal carotid artery by power angio sonography.

This case report describes aplasia of the internal carotid artery (ICA) in a preterm infant. The collateral circulation could be mapped with power angio mode (PAM) and was confirmed by conventional angiography. In the literature, there is no case of ICA aplasia diagnosed at this early age. PAM is a method for imaging infantile cerebral vessels as reliably as angiography.