Purpose CLARITY is a prospective, multicenter, consecutive series including patients treated with GDC or Matrix coils for ruptured aneurysms. Long-term anatomical results are presented.
Materials and Methods Postoperative and long-term anatomical results were evaluated anonymously and independently by two experienced neuroradiologists using the 3-point Modified Montreal scale.
Results Post-operative and long-term anatomical results were evaluated in 517/649 patients (79.7%). In the long-term follow-up, complete occlusion was reported in 95/276 aneurysms (34.4%) in the GDC group and 80/241 aneurysms (33.2%) in the Matrix group, neck remnant in 127/276 aneurysms (46.0%) in the GDC group and 118/241 aneurysms (49.0%) in the Matrix group, and aneurysm remnant in 54/276 aneurysms (19.6%) in the GDC group and 43/241 aneurysms (17.8%) in the Matrix group (p=0.780). Direct comparison of long-term vs immediate post-operative aneurysm occlusion showed improvement in 35/272 aneurysms (12.9%) in the GDC group and 27/239 aneurysms (11.3%) in the Matrix group, stable situation in 98/272 aneurysms (36.0%) in the GDC group and 97/239 aneurysms (40.6%) in the Matrix group, and worsening in 139/272 aneurysms (51.1%) in the GDC group and 115/239 aneurysms (48.1%) in the Matrix group (p=0.555). During the follow-up period, a total of 32/517 patients were retreated: 9/276 (3.3%) in the GDC group and 23/241 (9.5%) in the Matrix group (p=0.003).
Conclusions 1-year anatomical results are not different in patients with ruptured aneurysms treated with GDC or Matrix coils. Similarly, the evolution of aneurysm occlusion is not different in patients treated with GDC or Matrix coils.
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Disclosures C Cognard: Consultant for Stryker, EV3, Codman. L Pierot: Consultant for Stryker. F Ricolfi: None. R Anxionnat: None.
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