A typical ECG feature during an angina attack is the presence of dynamic ST-T changes that last for a short time, and the ST segment can appear to be elevated or shifted downward. This condition can occur with the remission of angina symptoms or with the onset of an ECG graphic change. In some patients, the ECG pattern returns to normal after the symptoms have resolved. Patients with a preexisting T-wave inversion can develop a pseudo-erect T-wave during an angina attack. Between this electrocardiographic susceptibility of angina, it is difficult to capture during the remission of angina. This time, the diagnosis of angina can be made by other means, including exercise stress test, examination of dynamic electrocardiogram, coronary angiography and coronary CT.