Coronary angiography is a diagnostic procedure that involves the use of contrast dye and X-rays to visualize the blood vessels supplying the heart (coronary arteries). This test helps cardiologists assess the presence of blockages, narrowing, or other abnormalities in the coronary arteries, providing critical insights into the patient’s heart health. It is a key tool in determining the need for further interventions such as angioplasty or stent placement.