The results of coronary CT are usually available on the same day. If a coronary CT is performed in the morning, the results can be available around 2-4 pm. However, there may be some differences in each hospital, but most hospitals can provide the relevant test results on the same day, and the speed of the corresponding coronary CT results is slower than the ordinary lung CT or head CT, but not much slower. If we consider that the patient may have an acute myocardial infarction, we will not let the patient have a coronary CT, but let the patient have a coronary angiography, which can not only make a clear diagnosis, but also directly perform coronary intervention.