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PT  - JOURNAL ARTICLE
AU  - Mitra, D.
AU  - Herwadkar, A.
AU  - Soh, C.
AU  - Gholkar, A.
TI  - Follow-Up of Intracranial Aneurysms Treated with Matrix Detachable Coils: A Single-Center Experience
DP  - 2007 Feb 01
TA  - American Journal of Neuroradiology
PG  - 362--367
VI  - 28
IP  - 2
4099  - http://www.ajnr.org/content/28/2/362.short
4100  - http://www.ajnr.org/content/28/2/362.full
SO  - Am. J. Neuroradiol.2007 Feb 01; 28
AB  - BACKGROUND AND PURPOSE: Matrix coils are polymer-coated bioactive coils used in treatment of intracranial aneurysms. The current study is aimed at evaluating the efficacy and safety of these coils in treatment of ruptured and unruptured aneurysms.METHODS: Seventy-seven consecutive patients with 84 aneurysms were included in the study. Forty-six aneurysms were treated with Matrix coils alone, and 38 were treated with Matrix coils in combination with other coils/devices. Angiographic follow-up was available in 64 patients with 70 aneurysms. Length of follow-up ranged from 6 to 28 months with mean of 10 months. Both postembolization and follow-up angiograms were graded on a 3-point Raymond scale. Aneurysms were classified as stable, improved, or recanalized based on the follow-up angiograms. Recanalization was considered major if it was saccular and its size would theoretically permit retreatment with coils.RESULTS: At the end of the initial procedure, 47 (56.0%) aneurysms showed complete occlusion (Raymond 1), 20 (23.8%) showed contrast filling the neck of the aneurysm (Raymond 2), and 16 (19.0%) showed contrast filling the sac of the aneurysm (Raymond 3). Of the 70 aneurysms in which follow-up angiograms were available, 55.7% remained stable in appearance, 20.0% showed improved occlusion, and 24.3% demonstrated recanalization; 8.6% demonstrated major recanalization. There were 2 aneurysm rebleeds (both incompletely packed); one resulted in death.CONCLUSION: Matrix coils are safe to use and the recanalization rate of aneurysms treated with these coils appears to be at least comparable with historical studies with Guglielmi detachable coils.