title: Nonhelical acquisition CT angiogram after aneurysmal clipping: in vitro testing shows diminished artifact.
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.
authors.affiliation: Department of Radiology, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, USA. alexander.mamourian@uphs.upenn.edu
authors.forename: A C
authors.initials: AC
authors.lastname: Mamourian
authors.forename: K
authors.initials: K
authors.lastname: Erkmen
authors.forename: D J
authors.initials: DJ
authors.lastname: Pluta
mesh_terms: D016477:Artifacts; D002533:Cerebral Angiography; D003035:Cobalt; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging* / Q000601:surgery; D019047:Phantoms, Imaging; D013525:Surgical Instruments; D014025:Titanium; D014057:Tomography, X-Ray Computed
chemical_list: D003035:Cobalt; D014025:Titanium