DR is: digital imaging technology, there are two main types of DR technology: one is called a charge-coupled device (CCDs), which is called a flat panel detector. The main advantage of the charge-coupled device technology is the fast image acquisition capability ， which is very important in cardiovascular and other fluoroscopy applications.
The disadvantage is that the spatial resolution of the CCD is limited, and there is noise and bulk in the image intensifier. Flat panel detector technology has the advantage of being used in perspective to replace the 100-pound image intensifier with a TV camera with a 15-20 lb receiver. In this way, the flat panel detector allows the equipment manufacturer to provide a system that is 90% smaller and 85% lighter than current products. It replaces the image intensifier to make it smaller and lighter.
The flat panel detector allows the R/F to be designed to be smaller and frees the device from the radiologist’s habits. Without a large image intensifier, patient anatomy images that were previously impossible to see are now easy to implement. But the biggest weakness of DR is that it is expensive and needs further development.
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