TY - JOUR T1 - Overlying Fluoroscopy and Preacquired CT Angiography for Road-Mapping in Cerebral Angiography JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 494 LP - 495 DO - 10.3174/ajnr.A1757 VL - 31 IS - 3 AU - C.-J. Lin AU - R. Blanc AU - F. Clarençon AU - M. Piotin AU - L. Spelle AU - J. Guillermic AU - J. Moret Y1 - 2010/03/01 UR - http://www.ajnr.org/content/31/3/494.abstract N2 - SUMMARY: We describe our preliminary experience using a road-mapping procedure that involves combining preacquired CTA with real-time fluoroscopy. This maneuver facilitates navigation in supra-aortic vessels from the arch to skull base levels. It requires less contrast than is used for traditional road-mapping while potentially reducing the hazard of thromboembolic events associated with direct catheterization. The accuracy of registration between the 2 volume datasets seems satisfactory for clinical practice. APanteroposteriorCTACT angiography3DRA3D rotation angiographyMIPmaximum intensity projection. ER -