Advanced Application of "Blank Roadmap" Technique for Transvenous Approach

Area of Science:

• Interventional Neuroradiology
• Vascular Neurology
• Medical Imaging

Background:

• The inferior petrosal sinus can be difficult to visualize on standard angiograms.
• Complex venous anatomy, including the torcula and cavernous sinus, presents challenges for catheter navigation.
• These venous "carrefours" are critical for accessing distal targets in neurovascular interventions.

Purpose of the Study:

• To describe the advanced application of the "blank roadmap" technique.
• To demonstrate its utility in navigating challenging venous anatomy for transvenous embolization.
• To enhance treatment strategies for dural arteriovenous fistulas (dAVF) and brain arteriovenous malformations (bAVM).

Main Methods:

• Application of the "blank roadmap" technique for guidewire and microcatheter navigation.
• Focus on traversing the torcula and cavernous sinus.
• Utilized in cases requiring transvenous embolization for dAVF and bAVM.

Main Results:

• Successful navigation through the complex and often poorly visualized torcula and cavernous sinus.
• Facilitated access to contralateral targets for embolization procedures.
• Demonstrated the technique's effectiveness in challenging anatomical scenarios.

Conclusions:

• The "blank roadmap" technique is a valuable tool for interventional neuroradiologists.
• It enhances the ability to navigate complex venous anatomy during transvenous embolization.
• This technique improves treatment outcomes for patients with dAVF and bAVM.