Optimizing Technology Research of Imaging Quality on X-ray Digital Imaging

摘要

It has become an inevitable development that X-ray digital imaging detectors replace film-screen.The imaging quality of X-ray digital detector could not reach the level of film-screen due to its unique characteristics. It is the key that to research the method of improving and optimizing the digital imaging quality. The main factors to impact X-ray digital imaging quality is inherent non-uniformity of detector and random noise of the system. By analyzing imaging characteristics and mechanism of digital detector the non-uniformity correction model is established. The high imaging quality obtained is equal to B level of film-screen for contrast sensitivity in the condition of optimizing physical and penetrating parameters of X-ray digital imaging system with noise suppression technology. The optimization technology validated by experiment is feasibility and universal, can be applied to all types of X-ray digital testing systems.