Nonhelical acquisition CT angiogram after aneurysmal clipping: in vitro testing shows diminished artifact
A C Mamourian1, K Erkmen, D J Pluta
1Department of Radiology, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, USA. alexander.mamourian@uphs.upenn.edu
AJNR. American Journal of Neuroradiology
|January 11, 2008
Abstract:
Imaging of the cerebral vessels with use of CT angiogram (CTA) after placement of aneurysmal clips is often limited by clip artifacts. We used a phantom to demonstrate a visible reduction in metal artifact when using the axial technique, compared with the usual CTA helical acquisition. This approach may have some advantage when used for CTA with 64-section scanners in the specific circumstance of immediate postoperative imaging after placement of cerebral aneurysmal clips.


