What's the difference between hospital X-ray and spiral ct? Isn't the essence of ct X-ray? ~~~~~~~~~~~~~~~

CT is the abbreviation of Computed Tomography. Therefore, through the continuous attenuation of X-rays in the human body, the attenuation coefficient of a certain part of the human body can be obtained intuitively, and through a series of signal conversion, a tomographic image can be formed in the system workstation.

Of course, CT slice can be controlled to achieve the required slice thickness. The thinner the slice, the clearer the image, and the easier it is to judge the lesion. However, the thickness of different parts also has certain requirements. The radiation dose is the same as above, and the exposure dose is determined by voltage KV, current MA and exposure time. CT scanning is divided into axial scanning and spiral scanning.

As for fluoroscopy, it's an X-ray machine. There are many kinds, but they never change. The general principle is that a device that produces radiation shines on the human body, and there is a device that receives radiation behind the human body. According to the difference between digital and analog devices, one reads the image on the computer and the other shines on the cassette, and there are corresponding devices to read the data of the cassette, thus obtaining the image. The dose here is the same as that of CT. The other is magnetic vibration, which is more complicated but has zero radiation. The diagnosis of lesions is also more accurate than the above two.

The human body receives a certain amount of X-rays, which still has a great influence, but not too frequently. Generally in the hospital, the radiologist has considered these for you, so don't worry too much. If you are pregnant, it is best not to contact radiation, because it will have a serious impact on the fetus. If you are exposed to too much radiation, you can absorb radiation by eating more vegetables such as bitter gourd.

I wonder if this answer is clear ~o(∩_∩)o