DSA | 3D-TOF-MRA | CE-MRA | |
---|---|---|---|
Three-grade | |||
Patent | 20 (87%) | 6 (26.1%) | 12 (52.2%) |
Stenosis | 2 (8.7%) | 9 (39.1%) | 3 (13.0%) |
Occlusion | 1 (4.3%) | 8 (34.8%) | 8 (34.8%) |
Simplified two-grade | |||
Patent | 20 (87%) | 6 (26.1%) | 12 (52.2%) |
Stenosis/occlusion | 3 (13%) | 17 (69.6%) | 11 (47.8%) |
3D-TOF-MRA, three-dimensional time-of-flight magnetic resonance angiography; CE-MRA, contrast-enhanced MRA.