DR photographic conditions

DR is a direct X-ray conversion technology, which uses X-ray detector to convert X-ray information, so there are few imaging links.

DR system has no image blur caused by optical scattering, and its clarity is mainly determined by pixel size. DR system consists of electronic cassette, scanning controller, system controller and image monitor. It directly converts X-ray photons into digital images through electronic cassette, which is a generalized direct digital X-ray photography.

Extended data:

Disaster recovery characteristics

(1) DQE, the detection efficiency can reach 74%, while the DQE of ordinary screen X-ray photos is 30%.

(2) DR imaging speed is fast, the acquisition time is less than 10ms, and the imaging time is only 3 seconds, so the radiologist immediately observes the image on the screen. It can be sent to the post-processing workstation in a few seconds to read the film and send a diagnosis report. It takes about 5- 10 minutes from examination to diagnosis report for conventional chest DR photos.

(3) DR has high spatial resolution and low noise rate. Amorphous silicon is directly converted into electrical signals after X-ray irradiation, which can avoid the reduction of image sharpness caused by other imaging methods. For example, high-definition images can be obtained after ordinary screen combination photos and CR rays are irradiated with phosphorus. High performance MTF curve can be obtained.

Baidu encyclopedia -DR system

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