Digital DR photography generally takes several exposures. Is the radiation large after multiple exposures?


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

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

Since digital DR photography is a kind of radioactive examination, ionizing radiation will be generated in each exposure, so too many exposures should be avoided as much as possible. How many exposures do digital DR photography usually take? In fact, the second exposure of DR is normal, and sometimes more than three exposures are necessary.

Digital DR photography equipment

First of all, multiple exposures are very common, and the re-illumination rate of digital DR photography is much higher than that of film photography. It will cause a part to often need 2-3 exposures to get satisfactory results. Especially when faced with obese patients and infants who are not very cooperative.

Then, taking the common frontal and lateral chest DR as an example, one exposure is required for the frontal chest and one exposure for the lateral chest, which is two exposures.

Finally, many people worry about the radiation problem of multiple exposures. In fact, the current DR equipment is very advanced. In order to achieve low radiation dose management, it is equipped with DAP exposure dose display, automatic exposure control, removable grid and full The four functions of the automatic electric beam limiter can effectively control the dose intake without worrying about the radiation impact caused by multiple exposures.


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