Coronary angiography is a critical invasive imaging method used in the diagnosis and treatment of cardiovascular diseases. This procedure is generally indicated in the following situations:
* Presence of severe chest pain (angina pectoris) or symptoms suggestive of coronary artery disease (CAD).
* Detection of findings suggestive of CAD or myocardial dysfunction during exercise stress tests or other non-invasive examinations (such as echocardiography, computed tomography angiography).
* Evaluation of valvular heart disease and surgical planning.
* Assessment of cardiac risk before major surgical interventions in diabetic patients or individuals over 40 years of age.
* Control of vessel patency and graft function after coronary bypass surgery or stent/balloon angioplasty.
* Determination of the location and degree of obstruction after myocardial infarction (heart attack).

In summary, coronary angiography is performed to diagnose diseases in the arteries supplying the heart (coronary arteries), heart valves, or the main aorta, to assess myocardial function, and to determine advanced treatment strategies. It is an indispensable method, especially for the definitive diagnosis of vascular blockages.