Subtracted 3 D CT Angiography for Evaluation of Internal Carotid Artery Aneurysms : Comparison with Conventional Digital Subtraction Angiography

S. Sakamoto Y. Kiura M. Shibukawa S. Ohba K. Arita K. Kurisu BACKGROUND AND PURPOSE: 3D computed tomographic angiography (3DCTA) has been used recently for the evaluation of intracerebral aneurysms, but it is difficult to use this technique to visualize aneurysms near the base of the skull because of the presence of bone. Subtracted 3DCTA could replace digital subtraction angiography (DSA) for evaluation of aneurysms near the base of the skull if the 2 methods were to give similar results. The aim of this study was to compare the evaluation of aneurysms of the internal carotid artery (ICA) near the base of the skull by subtracted 3DCTA and DSA.

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