Diagnostic purposes of the coronary angiography is to detect stenosis (anatomy) and to detect ischemia related stenosis (function). Coronary angiography (CAG) is a gold standard invasive techniques, but has several limitations. Intravascular ultrasound (IVUS) provides tomographic intra-luminal images. Coronary computed tomographic angiography (CCTA) is helpful to assess precise anatomical information. Optimal functional criteria and their accuracy of IVUS and CCTA by fraction flow reserve (FFR) have not been compared yet.
Correlation between CCTA, IVUS and FFR will be evaluated. The presence of myocardial ischemia will be assessed by fractional flow reserve (FFR). Diagnostic performance (sensitivity, specificity, positive predictive/negative predictive values and diagnostic accuracy) of each modality will be assessed and compared.
Study Type
OBSERVATIONAL
Enrollment
150
Diagnostic procedures including computed tomography, coronary angiography, intravascular ultrasound, fractional flow reserve were performed in the patients suspected ischemic heart disease.
Inje University Ilsan Paik Hospital
Goyang-si, Gyeonggi-do, South Korea
Diagnostic accuracy
Evaluate and compare the diagnostic accuracy of the CCTA, IVUS and angiographic parameters for the prediction of myocardial ischemia (FFR\<0.8) 1. CCTA: % area stenosis 2. IVUS: minimum lumen area 3. Angiography: % diameter stenosis Diagnostic accuracy of each parameter: (true positive+true negative)/total cases
Time frame: 1 day
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