PT  - JOURNAL ARTICLE
AU  - Gonzalez, Nestor R.
AU  - Patel, Aman B.
AU  - Murayama, Yuichi
AU  - Viñuela, Fernando
TI  - Angiographic Evidence of Aneurysm Neck Healing Following Endovascular Treatment with Bioactive Coils
DP  - 2005 Apr 01
TA  - American Journal of Neuroradiology
PG  - 912--914
VI  - 26
IP  - 4
4099  - http://www.ajnr.org/content/26/4/912.short
4100  - http://www.ajnr.org/content/26/4/912.full
SO  - Am. J. Neuroradiol.2005 Apr 01; 26
AB  - Summary: A new angiographic finding in intracranial aneurysms embolized with Matrix coils is described. Two illustrative cases with a well-defined radiolucent separation between the coil mass and the parent artery are presented. To the best of our knowledge, this is the first report in humans of this finding. On the basis of prior histopathologic studies, this finding, which we call the “white-collar sign,” may indicate the formation of a thick connective tissue barrier between aneurysm and artery that prevents any further aneurysmal filling.