What can image dr check?

DR is a digital X-ray imaging, which is displayed differently on the negative according to the density of different organs of the human body. It is more suitable for bone trauma and lung diseases.

Digital X-ray imaging is an imaging technology that combines ordinary X-ray photography devices or perspective devices with computers to convert X-ray information from analog information to digital information and obtain digital images (Figure L-4). According to different structures, Dr can be divided into computer X-ray photography (cr), digital fluorescence photography (df) and flat panel detector.

Under the control of special computer, the X-ray energy irradiated on the detector is absorbed, digitized by photoelectric conversion principle, and stored and displayed in the form of digital images. DR includes direct digital radiography (DDR) and indirect digital radiography (IDR). DDR uses X-ray detectors to directly convert X-ray images into digital image signals. IDR refers to the method of obtaining analog X-ray images from I, I-TV or film and then converting them into digital images. 1995, the first DR prototype superior to CR appeared. The basic structure of DR is divided into X-ray image receiver, data collector, image processing, memory, image monitor and system controller. The working principle of DR is that X-rays passing through human body are processed by optical system, and then converted into digital image signals by TV camera and A/D. The imaging time is short, and it is convenient for storage, transmission and remote diagnosis.