Vascular compression by a ventricular shunt catheter: Clinical value of volume-rendered CT angiography

One of the strongest advantages of CT angiography (CTA) lies in its unique ability to display simultaneously the anatomy of the vascular system and th e topographic relationships existing between the vessels and the neighborin g structures. The case we report, a 76-year-old man who underwent an intrav entricular shunt placement complicated by a stroke, shows how this topograp hic assessment also provides important diagnostic information when vascular lesions resulting from an extrinsic compression mechanism are suspected.