Some questions and comments on Ge double energy Subtraction

Gecj

I have some questions about the principle of Dr dual-energy subtraction and chest photography.

I. At present, only Ge tablets can be used for exposure imaging within 2 ms. How does one achieve dual-energy subtraction of chest photography in other companies?

2. How to make two exposures in GE's Dr? For example, how to control the exposure parameters? Because GE's Dr control is not completed using software, is there a control key dedicated for two exposures on the high voltage generator control panel?

Iii. Two exposures of energy subtraction are mainly used to observe small pulmonary nodules, but GE's pixel size is um, which is not good for images of Small nodules. Are there any doubts about market operation?

4. In the software for observing Small nodules, why do few Chinese hospitals buy Deus CAD after it passes the FDA? In the United States, insurance starts to pay 19.13 US dollars. Why don't I buy much?

5. How to Use GE's two exposures to reduce energy usage in a hospital in China? How much is the software? Is there a hospital for GE's Cad? How much? Do you have any thoughts on these two types of software?

Military doctor

GE's dual-energy subtraction, after more than a year of promotion, has already been purchased by many hospitals, but it is understood that most hospitals have doubts about the diagnostic significance of the dual-energy subtraction image, for three reasons, The first is that the dual-energy subtraction image contains far fewer lesions than the normal image. Second, GE's flat pixels are too large to meet detailed requirements. Third, dual-energy subtraction reduces the patient's circulation. Therefore, from the perspective of actual hospital application, the technical advantages promoted by GE's double energy subtraction do not exist, but only the market operation. As for CAD, it is recognized that the best product of R2 is developed by several universities in Europe. CAD is useful theoretically because it can help doctors find suspected lesions, this reduces the chance of missed diagnosis, but there is no report on the effectiveness of hospital applications. Therefore, once new things appear in the market, they must be evaluated with professional and objective eyes. For example, Ge-promoted three-dimensional breast reconstruction imaging, because this method is different from CT reconstruction, only the average superposition of the image, each angle of the image includes all breast information, the superimposed image is not as intuitive as the ordinary X image. Fykwwq GE's dual-energy has been completed in the program, and the dual-energy of GE has been renewed twice in 2 ms by pressing the one-time attention button, with a high KV and a low KV. it is processed by a computer into three images. it takes several minutes. as far as our application is concerned, the effect on ribs close to the heart is not good, and the artifacts are too large. at present, there is a jagged artifact on the rib edge. We thought it was a fracture several times before we found it was an artifact. GE's dual energy I think I will buy it if I buy his machine. this is his characteristic. if you don't buy one, you 'd better buy another brand. GE has a large pixel size but fast refresh. It is suitable for dual-energy, but has low resolution. siemens has a small pixel size and high resolution. Ge is the advantage of reducing disadvantages. If the resolution is not good, it will compete for dual energy. it is claimed that no other company exists.