Journal article
Absent relationship between the coil-embolization ratio in small aneurysms treated with a single detachable coil and outcomes
American journal of neuroradiology : AJNR, Vol.26(8), pp.1916-1920
2005
PMID: 16155134
Abstract
Background and purpose: Although attenuated coil packing of intracranial aneurysms is an important goal of endovascular embolization, because of their small size, some aneurysms can only be treated with a single embolization coil. We retrospectively analyzed small aneurysms treated with a single Guglielmi detachable coil (GDC) to determine whether the coil-embolization ratio (CER) is predictive of embolization stability. Methods: The CER was determined for 25 small (<7-mm diameter) intracranial aneurysms, each treated with a single embolization coil. The largest aneurysm dimension, estimated by comparison to anatomic landmarks, was used for volume calculation based on a spherical model. Coil volumes were according to manufacturer specifications. CER was calculated by the formula (coil volume/aneurysm volume) x 100%. Embolization stability was assessed by angiographic follow-up. Results: The average CER for all aneurysms was 8.2% (SD, 6.5%; range, 0.6%-21.1%). Twelve percent of the aneurysms had a CER >20%. Follow-up angiographic assessment was conducted at an average of 30.8 months after initial treatment. Eighty-four percent of the aneurysms were obliterated. One large (6 x 10 mm) and 3 small (<1 mm) recurrences were identified. The average CER for unchanged aneurysms was 8.0% (SD, 5.9%) and for the recurrent aneurysms was 8.8% (SD, 8.7%), which was not statistically significant. Conclusion: Small aneurysms treated with a single coil achieved satisfactory stability despite having a low average packing attenuation. CER was not predictive of recurrence in small intracranial aneurysms treated with a single detachable coil.
Details
- Title: Subtitle
- Absent relationship between the coil-embolization ratio in small aneurysms treated with a single detachable coil and outcomes
- Creators
- James K GODDARD - Neuroradiology Section (Interventional Neuroradiology), Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, United StatesChristopher J MORAN - Neuroradiology Section (Interventional Neuroradiology), Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, United StatesDewitte T CROSS - Neuroradiology Section (Interventional Neuroradiology), Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, United StatesColin P DERDEYN - Neuroradiology Section (Interventional Neuroradiology), Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, United States
- Resource Type
- Journal article
- Publication Details
- American journal of neuroradiology : AJNR, Vol.26(8), pp.1916-1920
- Publisher
- American Society of Neuroradiology; Oak Brook, IL
- PMID
- 16155134
- ISSN
- 0195-6108
- eISSN
- 1936-959X
- Language
- English
- Date published
- 2005
- Academic Unit
- Neurology; Radiology; Iowa Neuroscience Institute; Neurosurgery
- Record Identifier
- 9984020779802771
Metrics
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