Abstract:
Objective To observe the application value of CT coronary angiography (CTCA) combined with CT first-pass myocardial perfusion imaging (MRI) in the diagnosis of silent myocardial ischemia (SMI).
Methods Seventy-nine patients with suspected SMI admitted to Jiaozhou People's Hospital from April of 2016 to December of 2017 were examined by MPI, CTCA and CT first-pass MRI. Based on the results of MPI, were used to determine the diagnostic sensitivity, accuracy and specificity of CTCA, CT first-pass MPI and combined examination were counted.
Results Among 79 SMI patients, 48 SMI cases were diagnosed by MPI, 31 without myocardial ischemia; 50 SMI cases were diagnosed by CTCA, 29 without myocardial ischemia; 53 SMI cases were detected by CT first-pass MPI, 26 without myocardial ischemia; 54 SMI cases were detected by joint examination, 25 without myocardial ischemia. CTCA, CT first-MPI pass and combined examination had poor sensitivity and accuracy. The sensitivity and accuracy of combined examination were 95.83% and 87.34%, higher than those of CTCA examination (72.92% and 64.56%), and the differences were statistically significant(P<0.05).
Conclusion The combined application of CTCA and CT first-pass MPI can not only show the degree and location of coronary stenosis in the diagnosis of SMI, but also display the myocardial perfusion. The diagnostic value is high.
Key words:
CT first-pass myocardial perfusion imaging,
CT coronary angiography,
Silent myocardial ischemia
Qiao Sun, Zhu Huang. Application of CTCA combined with CT first-pass myocardial perfusion imaging in the diagnosis of silent myocardial ischemia[J]. Chinese Journal of Heart and Heart Rhythm(Electronic Edition), 2018, 06(02): 83-85.