Inspection scope of dr medical devices

Dr is the abbreviation of digital direct imaging system, which is also often written as DR. Compared with traditional X-ray imaging, DR has the advantages of clearer image, lower radiation, faster inspection speed and higher success rate. The workload of radiology department is heavy, and the introduction of DR accelerates the filming speed.

DR is based on X-ray TV system, which uses computer digital processing to make analog video signal be sampled and converted to analog (analog to digital).

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. The contrast of the observed image is lower than 1% and the diameter is greater than 2MM.

The surface X-ray dose measured on the patient is only110 compared with conventional photography. Quantum detection rate (detection 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, etc. , 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 selenium.

Drum mode, direct digital radiography (direct digital radiography; Charge coupled device (charge coupled device)

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, so it can be used according to clinical needs.

Various image post-processing and other advantages, but also realized the radiology department without film, between departments, between hospitals, networking, convenient teaching and consultation.