What is a disaster recovery check?

DR inspection is a new technology of digital X-ray photography under the direct control of computer, and DR equipment is a new generation of X-ray inspection machine. During the DR examination, the examinee must remove all foreign objects, including clothes, bras, necklaces, etc., before the examination, that is, all things that affect the examination should be removed.

The imaging principle of DR and CT is the same, both are X-ray imaging, because X-rays have a strong penetrating power to human tissues and structures. However, the density of human tissue structure is different, and the amount absorbed when X-rays penetrate is also different.

Extended data:

The radiation dose of DR is very low. The chest posture photos of a DR (adult) were taken at 125KV, 320MA, 0.3MAS and a distance of 4500px, and the X-ray dose was only 0.20 roentgen, which was only 1/53.3 of the chest posture photos of ordinary screen combination (the X-ray dose of ordinary screen combination X-ray film was 65,433).

It is110 of the X-ray dose of CR photos, that is, the X-ray dose received by one screen of combined X-ray chest radiography is equivalent to the total X-ray dose of 53.3 DR photos, so the X-ray dose received by DR photos is far lower than the radiation standard set by CEC.

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