The similarities, differences, advantages and disadvantages of two methods for diagnosing intracoronary artery patency, coronary angiography (CAG) and coronary angiography (CTA).
I. Similarities and differences
CAG (angiography)
CTA (imaging)
Similarities
1. Contrast agent: the same iodine contrast agent is used.
2. Scanner: the same CT is used.
3. examination effect: both can reflect the degree of atherosclerosis, plaque formation and stenosis.
Differences
1. Injection of enhancer from artery.
2. Stents can be implanted.
1. Injecting enhancer from vein.
2. No stent can be implanted.
II. Advantages and disadvantages
CAG (Contrast)
CTA (imaging)
Advantages
1. Clear image, easy to distinguish lesion from normal.
2. Possibility of simultaneous stent implantation.
3. mechanical lumen evacuation can be performed at the same time.
1. Less technical difficulty in operation.
2. Less risky operation.
3. The cost is relatively low.
4. The examination can be performed on an outpatient basis.
Disadvantages
1, requires skilled professionals to operate.
2, there is a certain risk.
3. The cost of examination is relatively high.
4. Generally need to be hospitalized for examination.
1. Image clarity is not as good as coronary angiography.
2. Cannot be performed with stent implantation.
3. Cannot perform therapeutic de-stenting operation in the lumen of the vessel.