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AJNR - American Journal of Neuroradiology

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Angiographic Evidence of Aneurysm Neck Healing Following Endovascular Treatment with Bioactive Coils

Nestor R. Gonzalez^a, Aman B. Patel^c, Yuichi Murayama^b and Fernando Viñuela^b

^a Division of Neurosurgery, UCLA Medical Center, Los Angeles, CA
^b Division of Interventional Neuroradiology, UCLA Medical Center, Los Angeles, CA
^c Division of Endovascular Neurosurgery/Interventional Neuroradiology, Mount Sinai School of Medicine, New York, NY

View larger version (122K): [in a new window]   FIG 1. Lateral DSA image shows an aneurysm originating from the supraclinoid portion of the internal carotid artery at the level of the posterior communicating artery. Vessel narrowing due to vasospasm is visualized in the supraclinoid segment of the left internal carotid.

View larger version (109K): [in a new window]   FIG 2. Immediate postembolization lateral DSA image demonstrates complete occlusion of the aneurysm.

View larger version (111K): [in a new window]   FIG 3. Twelve-month follow-up angiogram, lateral image, demonstrates complete occlusion of the aneurysm with the presence of a thin radiolucent band separating the coil mass from the arterial lumen (arrow). This finding corresponds to a white-collar neck.

View larger version (109K): [in a new window]   FIG 4. Lateral DSA image shows two supraclinoid internal carotid artery aneurysms, the larger originating from the ventral wall proximal to the posterior communicating artery and immediately opposite the ophthalmic artery, and a second smaller aneurysm arising at the junction of the right internal carotid artery and the ophthalmic artery.

View larger version (114K): [in a new window]   FIG 5. Immediate postembolization lateral DSA image demonstrates complete occlusion of the aneurysm.

View larger version (113K): [in a new window]   FIG 6. Six-and-a-half month follow-up angiogram, lateral image, demonstrates complete occlusion of the aneurysm with the presence of a radiolucent band separating the coil mass from the arterial lumen. This finding corresponds to a white-collar neck. Note the contraction of the coil mass, with reduction of its size when compared with the immediate postembolization angiogram.