Initial experience with LVISTM EVOTM for distal flow diverting effects
Alisha E Suri1,2, Y Jonathan Zhang1, Trevor H Torigoe1,2
1Department of Neurointerventional Radiology, The Queen's Health Systems, Honolulu, HI, USA.
Summary
The LVIS™ EVO™ stent shows promise as an off-label flow diverter for treating small, complex intracranial aneurysms, demonstrating high occlusion rates and stent patency.
Area of Science:
- Interventional Neuroradiology
- Neurovascular Surgery
- Biomedical Engineering
Background:
- Flow diversion is standard for wide-necked intracranial aneurysms.
- Device delivery can be difficult in distal or tortuous vessels.
- LVIS™ EVO™ offers enhanced flexibility and navigability compared to traditional flow diverters.
Purpose of the Study:
- To evaluate the off-label use of LVIS™ EVO™ as an independent flow diverter.
- To assess its safety and efficacy in treating small, complex intracranial aneurysms.
Main Methods:
- Retrospective review of nine patients treated with LVIS™ EVO™.
- Analysis of demographics, procedural details, and angiographic outcomes.
- Follow-up computed tomography angiography for outcome assessment.
Main Results:
- 100% technical success rate with no peri-procedural complications.
- 83.3% complete aneurysm occlusion at follow-up (RROC class I).
- 100% stent patency and no new neurological deficits observed.
Conclusions:
- LVIS™ EVO™ is technically feasible and safe for off-label use in small, distal aneurysms.
- It presents a potential alternative to existing flow diverters for challenging anatomies.
- Further multicenter studies with longer follow-up are warranted.
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