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Table 4: Patient demographics and number of cases performed on each imaging platform^{^a}
Reference Platform Dose-Reduction Platform
No. of cases 
    Diagnostic 654 (71.6%) 173 (53.4%)
    Coil embolization 45 (5.0%) 42 (12.2%)
    Flow diverter 58 (6.5%) 26 (7.6%)
    Vasospasm 34 (3.7%) 26 (8.0%)
    Thrombectomy 37 (4.1%) 19 (5.5%)
    Stent-assisted coiling 27 (3.0%) 15 (4.4%)
    Carotid stenting 25 (2.8%) 9 (2.6%)
    Epistaxis 17 (1.9%) 5 (1.5%)
    AVM 10 (1.1%) 6 (1.7%)
    AVF 7 (0.8%) 3 (0.9%)
    Total 914 (73.8%) 324 (26.2%)
Patient characteristics 
    Age (yr) 57.4 ± 14.7 56.6 ± 15.2
    Weight (kg) 79.3 ± 19.9 77.6 ± 18.4
    Male 370 (40.5%) 134 (41.4%)
    Female 544 (59.5%) 190 (58.6%)
    Hypertension 276 (30.2%) 89 (27.5%)
Medical history 
    Diabetes 113 (12.4%) 39 (12.0%)
    CAD 67 (7.3%) 21 (6.5%)
    COPD 61 (6.7%) 26 (8.0%)
    Hypertension 496 (54.3%) 177 (54.6%)
    Obesity 53 (5.8%) 17 (5.2%)
Operator 
    1 59 (6.5%) 18 (5.6%)
    2 433 (47.4%) 175 (54.0%)
    3 249 (27.2%) 23 (7.1%)
    4 79 (8.6%) 92 (28.4%)
    Multiple 94 (10.3%) 16 (4.9%)
Note:—CAD indicates coronary artery disease; COPD, chronic obstructive pulmonary disorder.
↵a Data are presented as number (percentage) or mean ± SD. The number of patients with preprocedural hypertension is reported under “Patient characteristics,” while the number of patients with a documented history of hypertension is reported under “Medical history.”