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Table 3: 
Comparison between CS-TOF and PI-TOF for evaluating intracranial arterial stenosis
VariablesCS-TOFPI-TOFP Value
Diagnostic qualitya.046
    Grade 320 (90.9%)17 (77.3%)
    Grade 22 (9.1%)4 (18.2%)
    Grade 10 (0.0%)1 (4.5%)
    Grade 00 (0.0%)0 (0.0%)
Stenosis visualizationb.025
    Grade 248 (100.0%)43 (89.6%)
    Grade 10 (0.0%)5 (10.4%)
    Grade 00 (0.0%)0 (0.0%)
Luminal stenosis ratio (mean ± SD)57.9% ± 30.5%58.9% ± 31.0%.241
Edge sharpness of artery (mean ± SD)0.358 ± 0.0380.267 ± 0.042<.001
  • ↵a The diagnostic quality of the CS-TOF and PI-TOF images was graded on an ordinal scale from 0 to 3, with 0 indicating completely blurred arteries and severe artifacts; 1 indicating partially obscured arteries and moderate artifacts; 2 indicating good and clear arteries and slight artifacts; and 3 indicating excellent arteries and no artifacts.
  • ↵b The visualization of arterial stenosis was graded as follows: grade 2, definite stenosis and sufficiently recognized, high confidence; grade 1, probable stenosis, moderately confident; grade 0, low confidence.