Is cardiac CT the same as coronary CT?

Cardiac CT and coronary CT are different. Cardiac CT is generally considered an invasive procedure, whereas coronary artery CT is a non-invasive examination.

Cardiac CT refers to imaging of the heart using CT scanning, typically without the need for contrast agent injection. The purpose of cardiac CT is to evaluate the internal structures of the heart, such as the atria, ventricles, and valves, and it can sometimes assist in assessing heart function. Its primary role is similar to that of cardiac MRI or echocardiography—visualizing the internal anatomy of the heart. Tumors, blood clots, and similar conditions can also be detected via cardiac CT. In contrast, coronary CT focuses specifically on the coronary arteries. Although the scanned area is the same, this technique emphasizes the arteries, requiring the use of contrast agents to achieve proper visualization. The choice of examination method depends on the specific clinical question. Additionally, coronary CT angiography can help determine the presence of heart disease, while cardiac CT is considered the standard diagnostic tool for coronary artery disease. Patients with coronary artery disease must undergo comprehensive cardiac CT evaluation before deciding on interventional or surgical treatments.

Prior to the examination, it's important to stay relaxed and ensure adequate sleep to maintain the accuracy of the test results.