Effect of common carotid ligation on giant aneurysms of the internal carotid artery

✓ The effects of common carotid artery ligation on five giant aneurysms (greater than 2.5 cm in diameter) of the internal carotid artery were studied by computerized tomography (CT). Four aneurysms thrombosed completely and one partially. The CT image of the thrombosed part in giant aneurysms is protean, varying from hyperdensity in the immediate postoperative period to isodensity and finally to inhomogeneously increased or decreased density, the attenuation values depending on the different stages of organization of the thrombus and on calcium deposition.