Coronary Computed Tomography (CT) Angiography, commonly known as "10-second angiography" or "bloodless angiography," is a comfortable and non-invasive method for patients. This procedure can be easily performed without requiring any prior laboratory work. During the process, a sublingual tablet is administered to the patient to ensure dilation of the coronary arteries. Subsequently, a special contrast agent is injected intravenously, and three-dimensional images of the coronary arteries are obtained from different angles using special computer-assisted programs. This rapid imaging technique, which typically takes around 10 seconds, operates on a principle similar to lung or brain tomography. Its primary purpose is to identify any blockages or narrowing in the heart's blood vessels. If a significant blockage or narrowing is detected, the patient is referred for conventional angiography for treatment planning and necessary intervention.