Application of High-Resolution C-Arm CT Combined with Streak Metal Artifact Removal Technology for the Stent-Assisted Embolization of Intracranial Aneurysms

Neuroform EZ stent-assisted embolization of a ruptured aneurysm in the right posterior communicating artery. A and B, DSA and 3D reconstructed images show a right posterior communicating wide-neck aneurysm with an irregular petal shape (tumor neck: 3.4 mm; 2 daughter sacs of 2.8 × 3.6 and 2.4 × 3.1 mm). C, Complete aneurysm embolization with the Neuroform EZ stent (3.5 × 30 mm) while maintaining artery patency. D, Normal DynaCT reconstructed images immediately after the operation show that the stent mark is clearly developed, the stent wire is poorly developed, and the coil metal artifacts are large. E, DynaCT Micro reconstructed images immediately after the operation show that the mark at the 2 ends of the stent is well developed, the stent wire is significantly well developed (relative to normal DynaCT), and the coil metal artifacts are still large; F, Reconstructed images of DynaCT Micro combined with SMART immediately after the operation show that the marks of the stent and the nickel-titanium wire are well developed, the metal artifacts of the stent wire and coils are significantly reduced, and the overall image quality is significantly improved.