Digital Radiography in Industry
Digital radiography is a powerful technique that can be used in Non-destructive examination of internal features of an object to obtain two-dimensional or three dimensional computed tomography(CT) images depending to the testing needs. New generation of digital detectors become more and more competitive to film detectors, however the transition from film to digital radiography is not always the best choice for every NDT organization especially from the point of view of investments.This paper explains the difference between the types of digital radiography detectors used to replace films and when transition from analogue film radiography to digital radiograph can be a practical technique for the NDT organization. Keywords: Computed radiography, Digital radiography, Digital detectors. Resolution, Imaging plate, Scintillator. Optimizing Technology Research of Imaging Quality on X-ray Digital Imaging Wenming GUO 1 Lihong LIANG 2 1. School of Software Engineering, Beijing University of Posts and Telecommunication, Beijing ,China 2. China Special Equipment Inspection and Research Institute, Beijing, China Abstract: 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.
X-ray digital image imaging quality non-uniformity noise
Wafik HARARA
Atomic Energy Commission; Damascus, Syria
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
74-79
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）