Reliability of dual- vs single-volume reconstruction of three-dimensional digital subtraction angiography for follow-up evaluation of endovascularly treated intracranial aneurysms.

Introduction: Single-volume reconstruction of three-dimensional (3D) digital subtraction angiography (DSA) can be effectively used for aneurysm assessment and planning of endovascular embolization. Unfortunately, post-embolization follow-up angiographic images can be obscured by artifact. The dual-volume reconstruction technique was developed in order to reduce artifact and enhance the visualization of the aneurysm, the parent vessel and side branches, and endovascular devices.