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Published on: November 4, 2021
Intracranial Aneurysm Embolization Using Interlocking Detachable Coils. Correlation between Volume Embolization Rate
K Satoh1, S Matsubara, H Hondoh
1Department of Neurological Surgery, School of Medicine, University of Tokushima; Tokushima, Japan.
Summary
The volume embolization ratio helps predict coil compaction in intracranial aneurysms treated with interlocking detachable coils (IDCs). Optimal embolization is recommended between 25-33% to prevent coil compaction.
Area of Science:
- Neurosurgery
- Interventional Radiology
- Biomedical Engineering
Background:
- Intracranial aneurysms pose a significant risk of hemorrhage.
- Endovascular coiling using interlocking detachable coils (IDCs) is a common treatment modality.
- Predicting and preventing coil compaction is crucial for successful aneurysm occlusion.
Purpose of the Study:
- To determine the relationship between volume embolization ratio (VER) and coil compaction in intracranial aneurysms treated with IDCs.
- To establish an optimal VER range to minimize coil compaction and ensure effective aneurysm occlusion.
Main Methods:
- Retrospective analysis of 7 intracranial aneurysms treated with IDCs between February 1994 and October 1996.
- Calculation of aneurysm volume assuming an ellipsoidal shape based on three-dimensional diameters.
- Calculation of total coil volume assuming IDCs are cylindrical.
Main Results:
- Coil compaction was observed in aneurysms with a VER below 25%.
- No coil compaction was noted in aneurysms with a VER exceeding 25%.
- VER was identified as a reliable predictor of coil compaction.
Conclusions:
- The volume embolization ratio is a critical factor in preventing coil compaction during endovascular treatment of intracranial aneurysms.
- An optimal VER range of 25-33% is recommended for embolizing intracranial aneurysms with IDCs to achieve durable occlusion and avoid compaction.
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