Comparative analysis between SPECT MPI and coronary angiography in patients after percutaneous coronary intervention Table 3.26 Comparative analysis between SPECT MPI and coronary angiography in patients after PCI Pts af ter PCI (n = 36) Coronary artery stenosis ≥ 70% in Angiography Yes No SPECT Positive 22 6 28 Negative 3 5 8 25 11 36 Kappa 0, 36 p < 0, 05 SPECT MPI detected 88% (22/25) pts with coronary artery stenosis ≥ 70% in angiography.