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

摘要

We read with interest the paper by Gonzalez et al reporting their angiographic findings in 2 cases of intracranial aneurysms treated with bioactive coils (Matrix; Boston Scientific Corporation, San Jose, CA) in the April 2005 issue of the AJNR (1). The authors describe a well-defined radiolucent gap between the coil mass and the parent artery of the treated aneurysm, an angiographic finding they name the “white-collar sign.” They speculate that this finding results from the formation of a thick connective tissue barrier at the aneurysm neck, on the basis of a histopathologic study performed on an animal model (2). Gonzalez et al seem to suggest that this new angiographic finding is specific to intracranial aneurysms embolized with bioactive coils.