Comparative analysis of CTA and MRA versus DSA for intracranial occlusion

Performance MeasureCTAMRA
Sensitivity71 (100)81 (87)
Specificity100 (100)98 (98)
Positive predictive value100 (100)61 (59)
Negative predictive value99 (100)99 (99.5)
  • Note.—Data are percentages using DSA as the reference standard; numbers in parentheses are percentages corrected for DSA false-positive occlusion by consensus reading. See Tables 6 and 8 for raw data.