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. 2023 Jun 13;85(8):3783-3790.
doi: 10.1097/MS9.0000000000000938. eCollection 2023 Aug.

A comparison of Atlas and Leo Baby stents-assisted coiling of intracranial aneurysms with small parent vessels

Qing-Wen Tang  1 , Yu Feng  1 , Cheng-da Zhang  1 , Ting-Bao Zhang  1 , Wen-Yuan Zhao  1
Affiliations

A comparison of Atlas and Leo Baby stents-assisted coiling of intracranial aneurysms with small parent vessels

Qing-Wen Tang et al. Ann Med Surg (Lond). .

Abstract

Some studies have reported the efficacy and safety of the Atlas stent and the Leo Baby stent-assisted coiling (SAC) of intracranial aneurysms arising from small cerebral vessels. The authors aimed to compare the clinical performance of the Atlas and the Leo Baby stents in small parent arteries.

Methods and materials: Between January 2019 and November 2022, 56 patients at our centre were treated using either Atlas or Leo Baby SAC of intracranial aneurysms arising from small parent vessels (<2 mm). The clinical and angiographic imaging data of the two cohorts were retrospectively collected and comparatively analyzed.

Results: A total of 56 patients were included in this study. Thirty-two patients were treated with the Atlas SAC, and 24 patients were treated with the Leo Baby SAC. The mean age of the Atlas stent cohort was older, and the mean aneurysm size was smaller than the Leo Baby stent. The immediate complete occlusion rate was 68.6% in the Atlas stent cohort and 62.5% in the Leo Baby stent cohort. The mean angiographic follow-up time for Atlas stent cohort was 8.9±2.5 months, and the final aneurysm complete occlusion rate was 81.0%. The mean follow-up time for Leo Baby stent cohort was 18.9±6.0 months, and the final aneurysm complete occlusion rate was 83.3%.

Conclusions: At the final follow-up, the Atlas or the Leo baby stent SAC of intracranial aneurysms with small parent vessels resulted in favourable angiographic results and clinical outcomes, with a low rate of associated complications.

Keywords: aneurysm occlusion rate; atlas stents; intracranial aneurysms; leo baby stents; small vessels.

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Conflict of interest statement

The authors declare that there are no potential conflicts of interests.

Figures

Figure 1
Figure 1
Representative case of Atlas stent group. (A) Angiogram showing wide-necked right MCA bifurcation aneurysm. (B) Native image from DSA showing the Neuroform Atlas stent deployment from the right MCA M2 portion to the M1 portion. (C) Postembolization angiogram showing near-complete aneurysm obliteration (arrow). (D) Follow-up angiogram after 6 months showing complete aneurysm obliteration and patency of the stent. DSA, digital subtraction angiography; MCA, middle cerebral artery.
Figure 2
Figure 2
Representative case of Leo Baby group. (A) Angiogram showing a wide-necked basilar-PCA aneurysm. The arrow shows the minimum vessel diameter in the stent deployment lesion. (B) Three-dimensional reconstructed image of rotational DSA. The arrow shows the basilar-PCA aneurysm. (C) Image from DSA showing Neuroform Atlas deployed from right PCA to basilar artery. (D) Postembolization angiogram showing complete obliteration. (E) Computer tomography image 1 day postoperatively showing no intracranial abnormalities. (F) Follow-up angiogram after 3 months showing maintenance of complete obliteration, but severe in-stent of the parent artery. DSA, digital subtraction angiography; PCA, posterior cerebral artery.
See this image and copyright information in PMC

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