Classifications proposed by various authors to assess outcomes of coiling

Articles	Classification	Classes	Dichotomy Possible?
Proposed for DSA
Raymond (1997)19	Complete	4	Y
	Dog ear
	Residual neck
	Residual aneurysm
Cognard (1999)20	100%	3	Y
	95–99%
	< 95%
Roy (2001)12	Complete	3	Y
	Residual neck
	Residual aneurysm
Johnston (2008)21	100% = complete	5	No
	91–99% = small residual neck		(yes?)
	70–90% = residual neck
	1–69% = partial occlusion
	0% = not occluded
Meyers (2010)22	≥90%	5	Y
	70–89%
	50–69%
	25–49%
	<25%
CLARITY (2010)23	A = complete occlusion	5	N
	B = subtotal occlusion with
	B1 complete neck coverage but contrast in coil mesh
	B2 incomplete neck coverage but no contrast in coil mesh
	B3 incomplete neck coverage and contrast in coil mesh
	C = incomplete occlusion = aneurysm remnant
Proposed for MRA
Gönner (1998)24	Complete	2	Y
Anzalone (2000)25	Residual flow
Yamada (2004)26
Boulin (2001)27	100%	3	Y
	95–99%
	<95%
Kahara (1999)28	No remnant	2	Y
	Remnant if cavity >1 mm (neck or body)
Leclerc (2002)29	Complete	4	N
	Small residual neck (1–3 mm)
	Large residual neck(>3 mm)
	Not assessable
Costalat (2006)30	Complete	3	Y
Gauvrit (2006)31	Residual neck
	Residual aneurysm
Cottier (2003)32	Complete	4	N
	Remnant size <3 mm
	Remnant size 4–5 mm
	Remnant size >5 mm
Majoie (2005)33	Remnant	3	N
	Recurrence
	Occlusion
Sprengers (2008)34	Adequate occlusion	2	Y
	Reopening