Low-dose spiral CT and ordinary CT difference?

One, the technology is different:

Low-dose spiral CT is a radiation dose reduction technology that is about 5 times lower than the dose of ordinary CT, so it often needs to sacrifice some image quality.

The speed of screening is different:

Low-dose spiral CT is generally used for screening of lung cancer and other related diseases, and once a problem is detected, it is still necessary to use ordinary CT for further examination or follow-up, which is clearer and more accurate.

Expanded information

I. Technical principle:

Low-dose spiral CT is the smallest scanning range, the lowest dose, the least amount of X-rays, to make a diagnosis of the lesion. Because of the spiral CT, a conventional scanning radiation is about 3-5mSv, low dose is about 1mSv, the radiation can be reduced by 2/3, the examination of the lesion can also make an accurate diagnosis.

Second, technology comparison:

Compared with the traditional conventional CT examination, one is the dose is small, so that the patient is exposed to radiation is small, on the small nodules can also be clearly displayed. It is routinely used for physical examination or tracking observation of tiny nodules in the lungs, so that the patient can get an accurate diagnosis, and then does not receive more doses of X-rays.