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Transvenous embolization along with intraprocedural image fusion technique for complex intracranial dural arteriovenous fistula

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Abstract

Purpose

This study aimed to investigate the efficacy and safety of an intraprocedural image fusion technique using flat-panel detector computed tomography-based rotational angiography (FDCT-RA) and image fusion (IF) for the transvenous approach in treating intracranial dural arteriovenous fistulas (dAVFs).

Methods

A retrospective review was conducted on patients who underwent transvenous embolization for dural AVFs. The patients were classified into two groups according to the treatment technique used: the FDCT-RA and IF technique group and the conventional technique group. The primary outcomes assessed were the angiographic and clinical outcomes, complications, fluoroscopy time, and radiation exposure. Univariate analyses were performed to compare the two treatment modalities.

Results

Eighty-six patients with intracranial dAVFs were treated with transvenous embolization (TVE), of which 37 patients underwent transvenous approach with flat-panel detector computed tomography-based rotational angiography (FDCT-RA) and image fusion (IF) technique used. The FDCT-RA and IF group showed difference in the location of dAVFs, occlusion state of the sinus, and access routes in comparison to the conventional treatment group. The FDCT-RA and IF technique was predominantly used for dAVFs involving the anterior condylar confluence and cavernous sinus with ipsilateral inferior petrosal sinus (IPS) occlusion. Patients treated with this technique demonstrated a higher rate of complete occlusion (91.9%, n = 34) compared to those treated with the conventional technique (79.6%, n = 39), but this difference was not statistically significant (p = 0.136). Although the implementation of this technique during the treatment procedure showed a tendency to decrease both fluoroscopy duration and radiation dose, the observed results did not reach statistical significance (p = 0.315, p = 0.130).

Conclusion

The intraprocedural image fusion technique using FDCT-RA for transvenous treatment of intracranial dAVFs could provide help in treatment of dAVFs of certain locations or access routes. It might provide aid in microcatheter navigation, without increasing the radiation exposure and fluoroscopy time.

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Data availability

Data are available upon reasonable request.

Code availability

Not applicable.

Abbreviations

FDCT-RA and IF:

Flat-panel detector computed tomography-based rotational angiography and image fusion

TVE:

Transvenous embolization

dAVF:

Dural arteriovenous fistula

IPS:

Inferior petrosal sinus

CRV:

Cortical venous reflux

ICH:

Intracranial hemorrhage

2D:

2-Dimensional

IJV:

Internal jugular vein

CS:

Cavernous sinus

ACC:

Anterior condylar confluence

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Funding

This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIT) (No. 2021R1G1A1093281).

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Contributions

The study’s concept and design involved contributions of all authors. Data collection and analysis were primarily done by SHO and JHC. JHC wrote the initial draft of the manuscript, which was reviewed and commented on by all authors. The final manuscript was read and approved by all authors.

Corresponding author

Correspondence to Jai Ho Choi.

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Ethics approval

This retrospective study was approved by the Seoul St. Mary’s Hospital Institutional Review Board (Seoul, South Korea).

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Informed consent was waived due to the study’s retrospective design.

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The authors declare no competing interests.

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Oh, S.H., Choi, J.H., Kim, B.S. et al. Transvenous embolization along with intraprocedural image fusion technique for complex intracranial dural arteriovenous fistula. Acta Neurochir 165, 3769–3777 (2023). https://doi.org/10.1007/s00701-023-05853-7

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