Spiral CT angiography in demonstration of cerebral aneurysms before and after treatment with titanium clips

RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
C BeckerM Reiser

Abstract

To determine the suitability of spiral CT angiography (SCTA) in patients with intracerebral titanium aneurysm clips. The section parameters were optimised using a phantom. 16 patients were examined preoperatively and 18 following treatment of aneurysms with clips. The resolution, sensitivity and specificity for demonstrating cerebral aneurysms measuring > or = 3 mm was 91.3% and 75% respectively. In 15 patients with intracerebral clips there were no or only minor artefacts; three examinations were of no value because of major metal artefacts. Amongst six aneurysms demonstrated angiographically, two, which measured more than 3 mm, could be shown by SCTA. SCTA was able to demonstrate intracerebral aneurysms measuring > or = 3 mm. Titanium clips did not usually affect image quality significantly.

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