The heart is the most important pump in the body, and the coronary arteries are important channels for supplying blood and oxygen to the heart and various vital organs.
The opening of the coronary artery is located above the aortic valve, so that when the heart ejects blood, the blood in the coronary artery will also be in a relatively full state, so as to better ensure the normal blood circulation of the liver, spleen, cerebral blood vessels, cardiomyocytes and other parts.
However, if there is a lesion in the coronary arteries, it will lead to a decrease in the blood supply to the heart muscle, and even induce angina, acute myocardial infarction and other conditions. Therefore, if there is a suspicion of a coronary artery problem, it is recommended to have a timely examination, such as a coronary CT scan.
A coronary CT scan is a procedure that uses a CT device to determine whether the arteries are healthy.
The CT device mainly consists of three parts:
1. The scanning part, which is composed of an X-ray tube, a probe and a scanning frame.
2. The computer system is mainly used to collect the information and data of the scan.
3. The image display and storage system is used to display the image processed by the computer on the screen, or shoot it with multiple cameras.
With the development of science and technology, the detectors used in coronary CT examination have also developed from the original 1 to the current 4800, and the scanning method has also developed from the original translation/rotation, rotation/fixation, etc. to spiral CT scanning, which greatly improves the accuracy of detection.
In addition, the computer used for coronary CT examination has a large capacity and fast calculation, and it can immediately reconstruct the image to determine the corresponding symptoms, such as aoritis, arteriosclerosis occlusion, aortic flow, and other symptoms.
However, coronary CT is effective, but it is important for patients to be careful before undergoing the examination. So what do you need to pay attention to when doing a coronary CT scan?
1. Pay attention to steady breathing
During the examination, the doctor will ask the patient to take a proper deep breath to observe the patient's heart rate changes, so the patient should pay attention to the fact that he breathes smoothly and inhales the same amplitude as usual. Secondly, the chest and abdomen should remain in a static state when holding breath, and do not move at will, so as not to affect the diagnostic effect.
2. Relax
During the whole examination, the patient does not feel any pain, but there are still some patients who are too nervous when doing coronary CT examination, and when the person is too nervous, the heart rate may increase, which will have a great impact on the examination results. Therefore, it is important to relax and not to overload yourself during the examination.
3. No need to fast
It is important to note that fasting is not required for coronary CT scan. The coronary arteries are not part of the abdomen or gastrointestinal tract, so the results of the test are not affected by food. In particular, middle-aged and elderly patients should not be tested when they are hungry, so as to avoid symptoms such as hypoglycemia or low blood pressure caused by starvation.
Although a coronary CT scan can be effective in diagnosing the extent of some coronary artery lesions and the resulting diseases, a coronary CT scan is a radioactive imaging that can cause harm to the body if there are too many examinations, so it is best to communicate with your doctor carefully before doing this test.
Secondly, if the body has already developed coronary artery disease, it is necessary to treat and recuperate under the guidance of a doctor to avoid more serious lesions, such as rational use of drugs and maintaining good lifestyle habits.