In X-ray photography, digital X-ray images have higher image resolution, wider gray scale, and larger image information than normal X-ray images, which helps to improve the diagnostic accuracy. In Digital Radiography (DR), the conversion of X-rays into electrical signals is achieved by Flat Plane Detector (FPD), so the characteristics of flat panel detectors have a relatively large impact on DR image quality.
First, the characteristics and advantages of digital X-ray image (DR)
1. Digital image (DR) has clear and delicate images, high resolution, wide gray scale, large amount of information and large dynamic range.
2. High density resolution and more image detail are the most important features of digital X-ray image (DR) over ordinary radiography.
3, DR projection speed is fast, the impact of motion artifacts is small. Especially for crying children and elderly patients who are not breathable.
4. DR imaging has small radiation. Since the flat panel detector of the digital X-ray image (DR) is much more sensitive than the ordinary X-ray film, it only needs a relatively small energy to obtain a satisfactory image. Digital X-ray images (DR) are reduced by 30%-70% compared to normal image radiation.
5, digital images of bone structure, articular cartilage and soft tissue display is better than traditional X-ray images, digital images are easy to display mediastinal structures such as blood vessels and trachea, the detection rate of nodular lesions is higher than traditional X-ray images .
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