What is digital photography technology?

CR system is an imaging board which uses laser to record and read X-ray imaging information.

Plate; IP) as a carrier, X-ray exposure and information reading are used to form digital or plane images. Current CR systems can provide the same resolution as screen film photography. CR system realizes the digitization of conventional X-ray photography information, and directly converts the analog information of conventional X-ray photography into digital information. It can improve the resolution and display ability of images and break through the inherent limitations of conventional X-ray photography technology. Computer technology can be used to realize various image post-processing functions and increase the level of displayed information; It can reduce the radiation dose of X-ray photography and reduce radiation damage; The digitized information obtained by CR system can be transmitted to the lower image archiving system.

and

exchange; communicate

System; PACS) to realize telemedicine.

2.DRDR is based on X-ray TV system, which makes analog video signal undergo sampling, analog/digital conversion (analog

arrive

Digit (A/D) then directly enters the computer for storage, analysis and preservation. X-ray digital images have high spatial resolution and large dynamic range. Objects with contrast lower than 1% and diameter greater than 2MM can be observed in their images. The surface X-ray dose measured on the patient is only110 compared with conventional photography. Quantum detection rate (detective)

quantum

Efficiency; DQE) can reach more than 60%. X-ray information can be processed by computer after it is digitized. By improving image details, reducing image noise, gray scale, contrast adjustment, image enlargement, digital subtraction and so on. , displaying the feature information that can't be seen in the unprocessed image. With the help of artificial intelligence and other technologies, images can be quantitatively analyzed and feature extracted, and computer-aided diagnosis can be carried out.

Digital radiography includes drum mode, direct digital radiography (direct

digital

Radiography; Charge coupled device (charge)

coupled

Equipment; CCD) camera array mode and other modes. Digital images have high resolution, good clarity and clear details. The radiation dose is small, and the exposure latitude is large. Various images can be post-processed according to clinical needs. Radiology department can be filmless, and departments and hospitals are networked to facilitate teaching and consultation.