What is the difference between CTA and imaging? Can a friend passing by tell me?

There is still some difference between CTA and imaging, although I am not a professional, but a family member will understand about a related disease. Some time ago, the elderly at home were a little unwell, and went to the Ping An Health Testing Center for examination, and the doctor suspected that it was arteriosclerosis, and gave a CTA checklist, informing him that this was a preliminary diagnosis, non-invasive operation, and also intimately helped the elderly to do relevant examinations to see if it was an indication, or quite professional.

Contrast and CTA are both clinical methods for diagnosing coronary heart disease, but CTA is a non-invasive examination, while coronary angiography is an invasive examination.

I know a little bit more about CTA, which is a preliminary test and is a non-invasive procedure, but to make sure that there is no iodine allergy. Some time ago, my grandfather was unwell and went to the Ping An Health Testing Center for examination, in order to determine whether my grandfather had the conditions to do coronary CTA, Ping An's medical staff also did liver and kidney function and electrocardiogram examinations, and the results showed that all indicators were within the allowable range, so I was relieved to go for the examination.

Maybe the relationship between two people is often like this, and it is impossible to explain it clearly in words. If you want to love but can't love, give up and don't want to give up, it's a great pain and discomfort, pretending to have an indifferent expression, pretending not to care, not sad, but painful.

In medicine, it is also called non-traumatic angiography technology (referred to as CT angiography or CTA), angiography is an interventional detection method, the contrast agent is injected into the blood vessels, because X-ray does not penetrate the contrast agent, angiography is to use this characteristic to diagnose vascular lesions through the image displayed by the contrast agent under X-ray.

1. Applicable groups of people are different. CTA is different from contrast examination in that it can show images that cannot be shown by ordinary contrast scans, such as the overall appearance of blood vessels in some parts, through CTA examination, we can initially see whether a section of blood vessels has been narrowed or occluded, but it cannot be diagnosed, so the main value of CTA is more similar to physical examination and screening for some vascular diseases. Contrast has the highest resolution, it is the standard for diagnosing vascular disease, and it is generally used in patients who are considered to have vascular disease if further diagnosis is required.

2. The pre-inspection assessment is different. CTA needs to inject iodine-containing contrast medium, because the contrast medium needs to be excreted through the kidneys, so before doing CTA examination, it is necessary to understand the patient's kidney function, and patients with poor kidney function cannot do CTA examination In addition, it is necessary to test whether the patient has an allergic reaction to iodine contrast medium. The contrast examination is an X-ray examination, and there are no special contraindications to the body.

3. One is non-invasive and the other is invasive. Contrast examination is an invasive examination, the examination is generally completed in the interventional room, and if a problem is found during the imaging process, it can be done on the spot, so the contrast examination is not only an examination method, but also a method. The CTA test is only a means of examination, although it is non-invasive, it cannot be performed**.

4. The scope of inspection is different. Contrast examination covers a wide range, it can have both angiography and organ angiography, such as hollow viscerography, cardiogram, intravenous pyelogram, liver angiography, hysterosalpingography, etc., according to different clinical needs, there will be different imaging methods, and CTA examination is limited to systemic angiography.

The above is the difference between CTA examination and contrast examination, no matter which kind of examination is done, there is no need to worry too much, to maintain a good attitude, in short, CTA is to inject intravenous needle, contrast examination should be completed in the intervention room, needle in the artery, generally choose the femoral artery at the root of the thigh or the radial artery of the wrist. In addition, it is important to follow the doctor's instructions, because the doctor needs to consider which test to choose based on the clinical situation in order to better determine the next step.

I have relatives who work as doctors at the Ping An Health Testing Center and have a little understanding. In general, the machines used for CTA and contrast are different, the former is the reconstruction image obtained after the CT scan, and the latter is the dynamic observation of the contrast medium injected by the X-ray equipment DSA. This is very professional enough, but that's all you know, and the rest can go to Ping An for consultation.

Contrast is an invasive procedure that requires hospitalization and is costly, but it is the gold standard. CTA can be used to reach the area that needs to be examined with drugs, which is low-cost, and can be done in an outpatient setting without hospitalization, but it is not as accurate as imaging. Mainly according to the needs of the condition, it is recommended that you go to the Ping An Health Testing Center for this kind of examination, which is relatively reliable and accurate.

I heard that there is still a big difference between CTA and imaging, for example, CTA is a non-invasive operation, which can be done in the outpatient clinic, and the cost is relatively less, but CTA is a preliminary diagnosis, and imaging is the gold standard, which is an invasive operation.

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.

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.

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.