TABLE 4

Predictive Values of Perfusion Scan Compared with CTA

TestPPVNPVNot diagnostic
Modified PIOPED perfusion scan*72.4% (220/304)96.5% (1,069/1,108)20.6% (366/1,778)
PISAPED perfusion scan*84.7% (272/321)95.5% (1,391/1,457)0.0% (0/1,778)
CTA†85.7% (150/175)94.8% (567/598)6.2% (51/824)

  • ↵* Pooled data for 2 readers.

  • ↵† Data from Stein et al., Table 4 (14).