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kemout
Age: 33
Joined: 17 Mar 2011
Posts: 35
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Two ways of digital X-ray imaging techology: one is CR that has already used for fifteen years and changed the work of X-ray department. It can improve jop efficiency and omit film flushing,storage and transporation. The other is DR and it collects rays and transfors digital image by the special light-sensitive materials.
First: Advantage and disadvantage of CR
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CR adopt the activation fluorescence that contain collection machine which can gather electron of x-ray. The gathered electron is consist of latent image. Cassette is put into laser scanner and appear by the optical multiplier tube. Advantageof that can use completely old X-ray machine to achieve image digitization; The problem of CR is that lower resolution.
Second: Advantage and disadvantage of DR:
Two types of DR: One is CCD and the other is flat detector. Advantage of CCD is fast image collection. It is very important in cardiovascular and other perspective application. The shortage of that are limited spatial resolution,noise of image intensifier and large volum; As for flat detector, it is quite small and convenient because of no large image intensifier and it is very easy to effect in seeing patient anatomic image that couldn't see that. But the largest shortage of it is high price.
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wts30286
Joined: 06 Nov 2012
Posts: 45130
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