Accuracy for identifying patients with inducible myocardial ischemia by SPECT-MPI was similar for CTA and ICA (area under the receiver operating characteristic curve, 0.68 versus 0.71 by quantitative coronary angiography and 0.68 by visual angiographic assessment; P>0.05).
Single-photon emission computed tomography myocardial perfusion imaging (SPECT-MPI) is commonly used for coronary artery disease diagnosis/assessment in the United States (US); however, the factors that most significantly affect patients' experience when undergoing SPECT-MPI are not well known.
In the current study, 1,033 stable symptomatic patients without a known history of coronary artery disease with normal SPECT MPI who underwent concomitant CAC scoring were included.
The diagnostic performance of SPECT-MPI to predict functional significant coronary artery disease by fractional flow reserve derived from CCTA (FFR<sub>CT</sub>): sub-analysis from ACCURACY and VCT001 studies.
The total correlation between TTDE and <sup>99</sup>Tc<sup>m</sup>-MIBI MPI for evaluation of myocardial ischemia was r=0.483 and between 2D-STI and <sup>99</sup>Tc<sup>m</sup>-MIBI MPI was 0.786.