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  • Title: Evaluation of combined cardiac positron emission tomography and coronary computed tomography angiography for the detection of coronary artery disease.
    Author: Adams GL, Trimble MA, Brosnan RB, Russo CA, Rusband D, Honeycutt EF, Shaw LK, Hurwitz LM, Turkington TG, Hanson MW, Pagnanelli RA, Borges-Neto S.
    Journal: Nucl Med Commun; 2008 Jul; 29(7):593-8. PubMed ID: 18528180.
    Abstract:
    BACKGROUND: Coronary artery disease is a leading cause of morbidity and mortality. Multiple imaging modalities are used to screen for significant coronary artery disease. We report the concordance between coronary computed tomography angiography (CTA) and stress cardiac positron emission tomography (CPET) to detect significant coronary artery disease, the feasibility of combining CTA and CPET in one diagnostic test, and the ability of CTA and CPET to detect significant coronary artery disease by comparison with cardiac catheterization. METHODS: Forty patients were prospectively enrolled and imaged with a hybrid PET/CT scanner. Eighteen patients had cardiac catheterization data for comparison. Concordance of findings between diagnostic tests was assessed by examining overall percentage in agreement, area under the receiver operating characteristic curve, sensitivity, specificity, and positive and negative predictive values. RESULTS: The overall agreement between CTA and CPET for detecting significant coronary artery disease was 76.3% with a sensitivity and specificity of 91.7 and 69.2%, respectively. The overall agreement between CTA and cardiac catheterization for detecting significant coronary artery disease was 81.3% with a sensitivity and specificity of 81.8 and 80.0%, respectively. The overall agreement between CPET and cardiac catheterization for detecting significant coronary artery disease was 77.8% with a sensitivity and specificity of 76.9 and 80.0%, respectively. CONCLUSION: CTA and CPET can be performed in a single diagnostic test interval to simultaneously assess the extent of coronary artery disease and its hemodynamic significance. The sensitivity and specificity of CTA and CPET are similar to existing noninvasive screening tests.
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