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. Received 31 March 1997; Revision received 27 October 1997; Accepted 21 November 1997