Brief Introduction of Image Intensifier TV System
The system composed of X-ray image intensifier, camera and monitor is called X-ray image intensifier TV system. The X-ray passing through the human body is irradiated on the input screen of the image intensifier to obtain a fluorescence image with weak brightness. After being enhanced by the image intensifier, a fluorescent image with a reduced size and a brightness of 10 million times higher than that of the input screen is obtained on the output screen. After the fluorescence image on the output screen is transmitted and corrected by the optical system, it is captured by the camera tube. The video current signal output from the camera tube is amplified by the preamplifier, the image signal is controlled, processed and amplified by the controller to obtain the full TV signal, which is transmitted to the monitor, and the X-ray perspective image is displayed on the monitor screen.
The advantages of using image intensifier TV system in medical X-ray machine are obvious. Firstly, the X-ray machine with this system can easily realize compartment operation, protect the operator from X-ray radiation damage and reduce the radiation dose of the examinee.Secondly, it can realize the chamber operation, get rid of the original dark room environment, improve the fear of patients and reduce the misdiagnosis rate.Because of the inherent characteristics of TV signal, it can be conveniently recorded and saved, and it is convenient for expert consultation and teaching reference.
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