[Diagnosis of obstructive coronary artery disease using CT coronary angiography combined with CT first-pass myocardial perfusion imaging at rest].

Objective To assess the feasibility and accuracy of CT coronary angiography(CTCA) combined with CT first-pass myocardial perfusion imaging(CT first-pass MPI) at rest for diagnosis of obstructive coronary artery disease(CAD).Methods Fifty-five patients,suspected or diagnosed as CAD,were performed with CTCA and CAG within 2 weeks.CT first-pass MPI detected myocardial ischemia through analyzing the raw date of CTCA.Results Comparison with the results of CAG,the sensibility,specificity,positive predictive value(PPV),negative predictive value(NPV) and accuracy of CT first-pass MPI at rest for detecting obstructive CAD were 84.6%,68.8%,86.8%,64.7% and 80.0%,respectively;and 92.3%,93.8%,97.3%,83.3%,92.7% for CTCA combined with CT first-pass MPI,respectively.Conclusions CTCA combined with CT first-pass MPI at rest could detect obstructive CAD feasibly and accurately.