Do you have any friends who are studying medicine, what is the difference between CTA and imaging?

I know a little bit, CTA and angiography are used to check the condition of the coronary arteries, CTA is a preliminary examination, angiography is relatively more accurate, I know the doctor of Ping An Health Testing Center told me that angiography is the gold standard of examination, and you can listen to the doctor's advice on which examination to do. If you don't understand, you can continue to ask or search.

CTA is a non-invasive test that uses intravenous iodine contrast agent to reconstruct the blood vessel in 3D under the contrast CT scan to determine whether the blood vessel is stenosis and the degree of stenosis. Contrast is an invasive examination, which is to puncture the arteries of the upper limbs or lower limbs, inject iodine contrast agents, and visualize them under X-rays to visualize the condition of blood vessels and judge whether there is stenosis, occlusion and the degree of stenosis of blood vessels. If the stenosis or occlusion of the blood vessel is found on reconstruction, and the indication for stent placement is met, stent implantation can be performed directly.

CTA is a non-invasive examination, no need to be hospitalized, relatively low cost, contrast is an invasive examination, requires anesthesia surgery, and at the same time can intervene if there is a problem**, the cost is relatively high. However, I don't know much about it, so I'll consult a professional doctor when I go to the Ping An Health Testing Center for a checkup. Glad to have your question, please give a big thumbs up.

CTA and contrast are different in terms of surgical methods, suitable populations, cost, and whether there is an invasive. I need to remind you that if you are doing CTA, you should pay attention to whether you are allergic to iodine, my elderly did relevant examinations when they did CTA at the Ping An Health Testing Center, and they can only be checked if the indicators are met.

CT scan, is a kind of computer X-ray tomography technology abbreviation, mainly according to the different tissues of the human body to the X-ray absorption coefficient of the different measurements, and then the measurement of the data into the computer, electronic.

A cross-sectional or stereoscopic image of the inspected part formed by computer processing the data. It is difficult to show small blood vessels with ordinary CT scans, even with simple contrast-enhanced CT scans.

It is easy to show the overall appearance of the blood vessels in the neck and brain, so if you need to understand the specific situation, then CTA can be a valuable test.

CTA is also called non-traumatic.

Angiography technology is a reconstruction method carried out after enhanced CT scanning, which simply means that a certain contrast agent is injected into the blood vessel during the scan to fill the vascular lumen and collect its data, and then it is reconstructed by computer.

The content of the non-interest area is deleted, and only the image of the blood vessel is retained and the overall and multi-angle reconstruction is carried out, so that the overall appearance of the blood vessel can be fully displayed, and it is also conducive to the display of diseased blood vessels. This is similar to a digital subtraction check (but CTA

3D image information can be provided). Compared to a normal CT scan, it only adds to the process of injecting drugs.

To put it simply, CTA needs the assistance of drugs, but it is a little more accurate, a little more high-end, and can be imaged in three dimensions.

Since you say you know it yourself, then this passage is here, why can't you understand it yourself?