Comparative analysis of CTA and MRA versus DSA for intracranial stenosis

Performance MeasureCTAMRA
Sensitivity98 (98)70 (70)
Specificity98 (99)99 (97)
Positive predictive value78 (93)63 (65)
Negative predictive value100 (100)98 (98)
  • Note.—Data are percentages using DSA as the reference standard; numbers in parentheses are percentages corrected for DSA false-positive stenosis by consensus reading. See Tables 7 and 9 for raw data.