Cardiac CT angiography is a non-invasive imaging technique that uses computed tomography (CT) technology to visualize the coronary arteries and blood vessels of the heart. This imaging technique provides detailed, high-resolution images of the heart and its surrounding structures, allowing for the evaluation of coronary artery disease, heart function, and other cardiac conditions. Cardiac CT angiography is commonly used to diagnose and evaluate coronary artery disease, assess the presence of plaque buildup in the arteries, and detect blockages or narrowing of the vessels. It is also used to plan for procedures such as coronary angioplasty or heart surgery. This imaging technique is considered safe and effective, with relatively low radiation exposure compared to other imaging methods such as traditional coronary angiography.