Digital x-ray imaging technology of DR system

Digital X-ray machine is an advanced X-ray machine formed by the combination of computer digital image processing technology and X-ray radiation technology. On the basis of the original diagnostic X-ray direct film imaging, the real-time image is digitally processed by A/D conversion and D/A conversion, and then the image is digitized. Its appearance broke the traditional concept of X-ray machine and realized the transformation from analog X-ray image to digital X-ray image that people dreamed of.

Features:

First, its most outstanding advantages are high resolution, clear and delicate images, and doctors can carry out various image post-processing such as digital subtraction as needed to obtain ideal diagnosis results.

Secondly, the device can display digital images in real time under fluoroscopy, and doctors can take digital photos according to the patient's condition, and then extract rich and reliable clinical diagnosis information from them through a series of image post-processing functions such as edge enhancement, magnification, black-and-white flipping, image smoothing, etc., especially to provide good diagnostic conditions for the discovery of early lesions.

Thirdly, the digital image formed by digital X-ray machine needs less X-ray measurement than traditional film imaging, so it can obtain high-definition image with lower X-ray dose and reduce the harm of X-ray radiation to patients.

Fourthly, because of changing the traditional film photography mode in the past, the original image management mode can be cancelled in the hospital radiology department, and the film warehouse can be omitted, and the computer filmless file management mode can be used instead, which can save a lot of money and space and greatly improve work efficiency. In addition, due to the appearance of digital X-ray images, the history that X-ray images could not enter the hospital PACS system ended, which provided great convenience for the hospital to conduct remote expert consultation and online communication. In addition, the device can also display multiple images and compare them, which is helpful for doctors to distinguish and diagnose accurately. Through the image rolling playback function, you can also recall the whole fluoroscopy process for doctors.

Clinical application of digital x-ray;

The quality of digital image and the amount of image information contained can be comparable to that of traditional X-ray imaging. The image processing system can adjust the contrast, so it can achieve the best visual effect; The tolerance range of photographing conditions is large; The patient received less X-rays. Image information can be stored and transmitted by magnetic disk or optical disk, which is the advantage of digital image. Digital images and traditional X-ray images are overlapping images of the whole area, so the areas that can be photographed by traditional X-ray can also be imaged by DR, and the observation and analysis of DR images are the same as those of traditional X-ray. The difference is that the DR image is composed of a certain number of pixels.

Digital image is superior to traditional X-ray imaging in displaying bone structure, articular cartilage and soft tissue, and quantitative analysis of mineral salt content is also feasible. Digital images can easily show mediastinal structures such as blood vessels and trachea. The detection rate of nodular lesions is higher than that of traditional X-ray images, but pulmonary interstitial and alveolar lesions are not as good as traditional X-ray images. DR is superior to traditional X-ray images in observing calcium-containing diseases such as intestinal pneumatosis, pneumoperitoneum and calculus.

Tomography using digital images is superior to X-ray tomography.

Gastrointestinal double contrast radiography is superior to traditional X-ray radiography in displaying gastric cells, tiny lesions and intestinal mucosal folds. DR is a new imaging technology, which is superior to the traditional X-ray image in many aspects, but it is still difficult to replace the traditional X-ray image in terms of cost performance. In clinical application, DR is not as irreplaceable as CT and MRI.