O'Kelly-Marotta scale for aneurysms treated with flow diversion
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The O'Kelly-Marotta (OKM) grading scale is a proposed method of assessing the degree of angiographic filling and contrast stasis, which takes into account the dynamic nature of the contrast stasis.
The diagram is by Dr. Tom Marotta from a publication in Interventional Neuroradiology 1. It has been reproduced here at his request and with the explicit permission from Sage Publishing.
- O'kelly CJ, Krings T, Fiorella D, Marotta TR. A novel grading scale for the angiographic assessment of intracranial aneurysms treated using flow diverting stents. Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences. 16 (2): 133-7. doi:10.1177/159101991001600204 - Pubmed