What do you mean by doctor's examination?

0 1, doctor's examination

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.

02. What's the difference between DR examination and ct?

DR is digital x-ray imaging; CT is computed tomography; The main difference between them is that the imaging characteristics are different, and CT has higher density resolution and hierarchy.

1, DR: DR uses a flat panel detector to replace the traditional X-ray film as the carrier of X-ray information passing through the human body, and applies subtraction technology to pixilate and digitize the X-ray information passing through the human body, which is finally converted into an analog X-ray image by a computer system. However, its image is still a superimposed image of the organizational structure image. For example, the anteroposterior plain film of the chest is the superposition of structural images such as chest wall, thoracic vertebral bone tissue, lung, heart and great vessels.

2.CT: CT images are tomographic images, which overcome the shortcomings of overlapping images of various tissue structures in ordinary X-ray examination, make the tissue structures of various organs display clearly, have higher density resolution and levels, and significantly improve the detection rate of lesions.