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Stereolithographic models in the interdisciplinary planning of treatment for complex intracranial aneurysms

  • Clinical Article - Vascular
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Abstract

Background

Treatment of complex intracranial aneurysms requires strategic pre-interventional or preoperative planning. In addition to modern three-dimensional (3D) rotational angiography, computed tomography angiography (CTA) or magnetic resonance angiogram (MRA), a solid, tangible 3D model may improve anatomical comprehension and treatment planning. A 3D rapid prototy** (RP) technique based on multimodal imaging data was evaluated for use in planning of treatment for complex aneurysmal configurations.

Methods

Six patients with complex aneurysms were selected for 3D RP based on CTA and 3D rotational angiography data. Images were segmented using image-processing software to create virtual 3D models. Three-dimensional rapid prototy** techniques transformed the imaging data into physical 3D models, which were used and evaluated for interdisciplinary treatment planning.

Results

In all cases, the model provided a comprehensive 3D representation of relevant anatomical structures and improved understanding of related vessels. Based on the 3D model, primary bypass surgery with subsequent reconstruction of the aneurysm was then considered advantageous in all but one patient after simulation of multiple approaches.

Conclusions

Preoperative prediction of intraoperative anatomy using the 3D model was considered helpful for treatment planning. The use of 3D rapid prototy** may enhance understanding of complex configurations in selected large or giant aneurysms, especially those pretreated with clips or coils.

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Abbreviations

3D RA:

3D rotational angiography

3D RP:

3D rapid prototy**

CTA:

Computed tomography angiography

MCA:

Middle carotid artery

MRA:

Magnetic resonance angiogram

PCA:

Posterior cerebral artery

SRA:

Superficial temporal artery

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Acknowledgements

The assistance of Ms. Susan Kaplan in editing the manuscript is acknowledged.

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Corresponding author

Correspondence to Michael Reinert.

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Funding

No funding was received for this research.

Conflict of Interest

All authors certify that they have no affiliations with or involvement in any organisation or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.

Ethical approval

All procedures performed in studies involving human participants fulfilled the requirements of the Ethical Committee of Bern, Switzerland (Kantonale Ethikkomission Bern, KEK) and were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

All patients provided informed consent.

Competing interests/financial disclosure

This work or part of this work has not been previously published. The authors report no conflict of interest concerning the materials or methods used in this study or the findings specified in this paper.

Ethical standards and patient consent

This study fulfilled the requirements of the local Ethical Committees of Bern, Switzerland.

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Andereggen, L., Gralla, J., Andres, R.H. et al. Stereolithographic models in the interdisciplinary planning of treatment for complex intracranial aneurysms. Acta Neurochir 158, 1711–1720 (2016). https://doi.org/10.1007/s00701-016-2892-3

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  • DOI: https://doi.org/10.1007/s00701-016-2892-3

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