Reduction of aneurysm clip artifacts on CT angiograms: a technical note.
We describe a head tilt technique for use with CT angiography that reduces beam-hardening artifacts in patients with aneurysm clips. This simple maneuver directs the artifacts away from pertinent anatomy, thus increasing the chances for diagnostic accuracy. No significant changes in the CT angiographic protocol are required, and the maneuver can easily be combined with other artifact-minimizing strategies.
D016477:Artifacts; D002533:Cerebral Angiography; D002536:Cerebral Arteries / Q000000981:diagnostic imaging; D002941:Circle of Willis / Q000000981:diagnostic imaging; D006257:Head / Q000033:anatomy & histology; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000601:surgery*; D008670:Metals; D011187:Posture; D011856:Radiographic Image Enhancement / Q000379:methods*; D016683:Supine Position; D014057:Tomography, X-Ray Computed; D014656:Vascular Surgical Procedures / Q000295:instrumentation*