Abstract
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.
Abbreviations
- AP
- anteroposterior
- CTA
- CT angiography
- 3DRA
- 3D rotation angiography
- MIP
- maximum intensity projection.
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