Clinical Research Directory

Inclusion Criteria: * Age ≥ 18 years old * Hospitalization due to either confirmed or suspected CHD combined with one of the following features: previous PCI or CABG; previous myocardial infarction; previous coronary angiography revealing ≥ 50% stenosis in major coronary vessels; presentation with chest pain and pre-test probability of CHD \> 65%; laboratory tests revealing objective evidence of myocardial ischemia; coronary CT angiography (CTA) showed ≥ 30% stenosis in major coronary vessels * Subjects undergoing at least one coronary imaging and one functional examination. Imaging examinations include coronary CTA, intravascular ultrasound (IVUS), or optical coherence tomography (OCT). Functional examination include fraction flow reservation (FFR), CT-FFR or quantitative flow ratio (QFR). * Written informed consent provided. Exclusion Criteria: * History of mental illness, drug or alcohol abuse, or being unable to cooperate with follow-up visits for any reason; * Life expectancy \<1 year * Pregnant or plan to be pregnant within 1 year * Subjects participating in any other clinical trial * Other conditions deemed unsuitable for inclusion by the investigator