What is CT examination?

CT is just an inspection machine, or a way, which can be used for both general examination and local examination.

CT machine is a computerized X-ray tomography camera, which is developed from X-ray machine. Its resolution and qualitative diagnosis accuracy are much higher than those of ordinary X-ray machines.

Generally speaking, all organic diseases can be examined by CT, especially organic space-occupying lesions with great density difference, which can be detected and qualitatively diagnosed. But the most suitable diseases for CT examination are brain diseases, among which tumors, hemorrhage and infarction are the best, followed by space-occupying lesions of abdominal parenchymal organs, such as tumors of liver, spleen, pancreas, kidney and prostate, and lumps of breast and thyroid can also be displayed and diagnosed. Secondly, check the masses in chest cavity, lung and heart cavity, and the masses in spine, spinal cord, pelvic cavity, gallbladder and uterus. CT is not effective in detecting some diffuse inflammation and degenerative diseases (such as hepatitis). CT is of little value, and it is not as good as endoscope in detecting gastrointestinal diseases.

CT can easily find tumors, lumps and bleeding. But the focus is too small, especially less than 6 mm, and CT is difficult to find.

The CT machine belongs to the radiation inspection machine, so it has certain radiation damage, but the human body receives few X-rays, and the radiation received in each inspection is only slightly higher than that in the general X-ray inspection, which generally does not cause damage, but it is not good to blindly carry out multiple CT inspections.

During pregnancy, be careful when doing abdominal CT examination, and take certain protective measures when doing other parts examination to avoid the influence of X-ray on fetus.