Difference between digital X-ray photography system and digital X-ray photography system

You're talking about similar medical equipment! The English name is Digital Radiography, or DR for short, which is the second-class medical equipment in the hospital. Generally, the top three hospitals will have this equipment, and of course, primary hospitals are becoming more and more popular.

1.DR is compared with the traditional X-ray image acquisition method: DR is a physical model completely represented by a set of regular digital quantities, and the digital image is characterized by large gray dynamic range, relatively high density resolution, good linearity and rich layers; Post-processing can be carried out; The radiation dose is small. Analog image (traditional X-ray image) is an intuitive physical quantity, which continuously and vividly displays patterns with another physical feature. Its characteristics are: continuous intuitive access is convenient; The image performance has the characteristics of universality and real-time dynamic acquisition, but the repeatability of the simulated image is poor, so it is impossible to change the imaging or carry out post-processing The dynamic range of gray scale is small.

2. The clinical application of DR is better than that of traditional X-ray: the diagnostic basis of DR is basically the same as that of traditional X-ray plain film, but the post-processing of digital image obviously expands the diagnostic scope.

3. The main characteristics of 3.DR compared with traditional X-ray.

(1) Improve the image quality and greatly reduce the exposure conditions;

(2) The imaging speed is fast, the acquisition time is below 10 ms, and the imaging time of conventional photos is only 5 s, so radiologists can immediately observe the images on the screen. It can be sent to the post-processing workstation in a few seconds. Print laser film as needed.

(3) Energy subtraction makes it possible for people to separate bone tissue from heart and lung tissue on ordinary X-ray films for the first time, which greatly improves the specific diagnosis of pulmonary nodules.

(4) It has a strong post-processing ability, which provides the best digital platform for hospital networking, because it takes into account the requirements of image quality and network transmission. (5) The problem of image archiving management and transmission is effectively solved, and the cost of CD burning is low and the economic benefit is good. It improves the work efficiency of radiology department and increases the circulation of patients.

Heaven and earth wisdom