Is there significant radiation from multiple exposures in suspending digital DR photography?


DR imaging examination, also known as digital X-ray photography, is a type of X-ray imaging widely used in medicine. It can check for lesions in the clavicle, ribs, pleura, back, and spine.

The principle of digital DR photography is to use X-rays that pass through the human body and do not directly act on the film, but are received by the detector and converted into digital signals. After computer processing, the image is obtained, and the collected information is digitized. After computer processing, the original image is reconstructed on the monitor.

Due to the fact that digital DR photography is a radioactive examination, ionizing radiation is generated during each exposure, so excessive exposure times should be avoided as much as possible. How many exposures does digital DR photography usually have? In fact, secondary exposure of DR is very normal, and sometimes more than three exposures are also necessary.

Digital DR photography equipment

Firstly, multiple exposures are very common, and the re exposure rate of digital DR photography is much higher than that of film photography. The reason for this is that DR photography images are displayed directly on the monitor, without wasting film, and the technical requirements are also low. This can lead to a need for 2-3 exposures in a certain area to achieve satisfactory results. Especially when facing patients with obesity and infants with low cooperation.

Then, taking the common chest anterior and lateral DR as an example, the chest anterior position needs to be exposed once, and the chest lateral position needs to be exposed once, which is two exposures.

Finally, many people are concerned about the radiation problem caused by multiple exposures. In fact, current DR equipment is very advanced, such as the Pulide Multi functional Dynamic DR (PLD7100A). To achieve low radiation dose management, it is equipped with four major functions: DAP exposure dose display, automatic exposure control, removable filter grid, and fully automatic electric beam limiter, which can effectively control dose intake without worrying about the radiation impact caused by multiple exposures.


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