Retrospective study demonstrates similar occlusion rates between Leo Baby and Atlas stents in intracranial aneurysms, indicating comparable clinical efficacy across device designs.
Key Points
To compare embolization outcomes and procedure-related complications between the Neuroform Atlas and Leo Baby stents in patients undergoing stent-assisted coiling for intracranial aneurysms.
Retrospective comparative analysis of 96 consecutive patients with intracranial aneurysms treated between January 2022 and December 2023 with either the Atlas stent (n=46) or the Leo Baby stent (n=50).
Evaluated immediate post-procedural angiographic occlusion, 6-month Raymond grade distribution, 1-year functional status via modified Rankin Scale (mRS), and peri-procedural complications.
Immediate complete occlusion was achieved in 89.1% of the Atlas cohort versus 88.0% of the Leo Baby cohort (P = 0.3281), with no significant difference in 6-month Raymond grade distribution (P = 0.5067).
Favorable functional outcomes at 1 year (mRS score 0–2) occurred in >90% of patients in both groups (P = 0.1528).
Peri-procedural complications occurred in 28.2% of Atlas patients versus 12.0% of Leo Baby patients (P = 0.0857), though post-hoc power analysis revealed only 42% power to detect this difference.