부산대학교 도서관

The CR system has been applied to almost all types of roentgenography. In oral surgery, it has been used for special techniques such as panoramic roentgenography, conventional radiography of the head, and tomography of the jaw joint as well as for extraoral techniques including the frontal radiography of the head with favorable results.In this study, we employed this CR system in panoramic roentgenography, which is performed frequently in oral surgery, to evaluate its abilities to delineate (1) anatomical structures and (2) lesions.(1) Ability to delineate anatomical structures.The bone structures, borders of the cortical bone, and the relationship between the root of the tooth and the jaw bone were more clearly represented, and the blur in the anterior teeth region characteristic of tomography was slightly reduced.(2) Ability to delineate lesions.The course of fracture lines, margins of cysts and tumors, relationship between the implanted tooth and the jaw bone, and anatomical structures around the lesions of siagonantritis were more readily evaluated, suggesting improved imaging ability of the CR technique.