Table 2:

Agreement for patients treated by radiosurgery or embolization

Parameters by Modality of Treatment	Residual Nidus	Residual Venous Drainage
Radiosurgery alone (n = 8)
Interobserver agreement for 4D-MRA	1.00 (1.00–1.00)	1.00 (1.00–1.00)
Interobserver agreement for DSA	1.00 (1.00–1.00)	1.00 (1.00–1.00)
Intermodality agreement between 4D-MRA and DSA	1.00 (1.00–1.00)	1.00 (1.00–1.00)
Embolization then radiosurgery (n = 14)
Interobserver agreement for 4D-MRA	0.75 (0.43–1.00)	0.75 (0.43–1.00)
Interobserver agreement for DSA	0.50 (0.08–0.92)	0.75 (0.43–1.00)
Intermodality agreement between 4D-MRA and DSA	0.49 (0.06–0.92)	0.50 (0.08–0.92)
Embolization alone (n = 8)
Interobserver agreement for 4D-MRA	0.50 (0.00–1.00)	1.00 (1.00–1.00)
Interobserver agreement for DSA	0.50 (0.00–1.00)	0.20 (0.00–0.81)
Intermodality agreement between 4D-MRA and DSA	0.50 (0.00–1.00)	0.50 (0.00–1.00)

Note:—Data are given as percent (95% CI).