The Comparison of the Diagnostic Values of Treadmill Exercise Testing, Exercise and Dipyridamole Stress SPECT Myocardial Perfusion Imaging in Coronary Artery Disease

Objective To compare the diagnostic values of treadmill exercise testing(TET), exercise stress SPECT myocardial perfusion imaging(MPI) and dipyridamole stress SPECT MPI in coronary artery disease(CAD).Methods Eighty three suspected CAD patients who had undergone coronary angiography (CAG) were divided into two groups according to the CAG results, the group of CAD(n=37) and the group of Non-CAD(n=46).All patients underwent TET, fifty six patients exercise stress SPECT MPI,and twenty seven patients dipyridamole stress SPECT MPI. Then the sensitivity,specificity, accuracy, positive/negative predictive value of TET, exercise stress SPECT MPI and dipyridamole stress SPECT MPI in diagnosing CAD were compared.Results The sensitivity values of TET, exercise and dipyridamole stress SPECT MPI are 51.4 %,95.5 %,93.3 % respectively;those of specificity are 76.1 %、88.2 %、91.7 % respectively;those of accuracy are 65.1 %、91.1 %、92.6 % respectively;The positive predictive values are 63.3 %、84.0 %、93.3 % respectively and the negative predictive values are 66.0 %、96.8 %、71.7 % respectively.Conclusions The value of exercise stress SPECT MPI is similar to that of dipyridamole stress SPECT MPI in diagnosing CAD, both of which are better than TET.