Table 2

Frequency of Different Stenosis Severity Grades (n = 410)

GradeDSAQISS-MRACTA
1, Normal208 (50.7)215 (52.4)201 (49.0)
2, Mild76 (18.5)80 (19.5)86 (20.9)
3, Moderate79 (19.2)70 (17.0)69 (16.8)
4, Severe37 (9.0)35 (8.5)44 (10.7)
5, Total occlusion10 (2.4)10 (2.4)10 (2.4)

Values are n (%).

CTA = computed tomography angiography; DSA = digital subtraction angiography; QISS-MRA = quiescent interval single-shot magnetic resonance angiography.