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Objective:

This study proposed and validated an intelligent microcatheter-shaping algorithm for interventional embolization of intracranial aneurysms.

Methods:

A stepwise microcatheter simulation algorithm constrained by a vessel center line was developed based on the geometry of aneurysms and parent arteries, and a collision correction factor of vessel walls was introduced to automatically calculate the optimal microcatheter path and tip shape. The efficacy of this intelligent shaping method was verified in an in vitro aneurysm model experiment.

Results:

The microcatheter path can be automatically generated using the intelligent microcatheter-shaping algorithm. Furthermore, the experiment verified that the delivery performance of an intelligently shaped microcatheter was excellent with 100% placement accuracy, superior to that of three pre-shaped microcatheters: straight (0°), 45°, and 90°. In three typical cases, the microcatheter could not be placed in the aneurysms successfully within 5 min with the aid of a microwire using a manual shaping scheme; however, it can be placed in the aneurysms successfully within 5 min using an intelligent microcatheter- shaping scheme, and the time of microcatheter placement in aneurysms was short.

Conclusion:

This intelligent microcatheter-shaping algorithm based on three-dimensional image data is effective and reasonable. This approach has advantages over standard pre-shaped microcatheters, with a potential clinical application value.


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A novel intelligent microcatheter-shaping method for embolization of intracranial aneurysm

Show Author's information Ling Song1Wei Ni2Wenzhi Wang1Guangming Yang1Jianjun Li1Xue Feng1Lan Qin1Wangsheng Lu1( )Yuxiang Gu2Yin Yin1( )
Union Strong (Beijing) Technology Co. Ltd., Beijing 100176, China
Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China

Abstract

Objective:

This study proposed and validated an intelligent microcatheter-shaping algorithm for interventional embolization of intracranial aneurysms.

Methods:

A stepwise microcatheter simulation algorithm constrained by a vessel center line was developed based on the geometry of aneurysms and parent arteries, and a collision correction factor of vessel walls was introduced to automatically calculate the optimal microcatheter path and tip shape. The efficacy of this intelligent shaping method was verified in an in vitro aneurysm model experiment.

Results:

The microcatheter path can be automatically generated using the intelligent microcatheter-shaping algorithm. Furthermore, the experiment verified that the delivery performance of an intelligently shaped microcatheter was excellent with 100% placement accuracy, superior to that of three pre-shaped microcatheters: straight (0°), 45°, and 90°. In three typical cases, the microcatheter could not be placed in the aneurysms successfully within 5 min with the aid of a microwire using a manual shaping scheme; however, it can be placed in the aneurysms successfully within 5 min using an intelligent microcatheter- shaping scheme, and the time of microcatheter placement in aneurysms was short.

Conclusion:

This intelligent microcatheter-shaping algorithm based on three-dimensional image data is effective and reasonable. This approach has advantages over standard pre-shaped microcatheters, with a potential clinical application value.

Keywords:

intracranial aneurysms, microcatheter shaping, model experiment
Received: 01 June 2021 Revised: 02 August 2021 Accepted: 09 August 2021 Published: 22 December 2021 Issue date: September 2021
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Publication history
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Publication history

Received: 01 June 2021
Revised: 02 August 2021
Accepted: 09 August 2021
Published: 22 December 2021
Issue date: September 2021

Copyright

© The authors 2021

Rights and permissions

This article is published with open access at http://jnr.tsinghuajournals.com

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