Hu T, Tan H, Hong L, Wang H
College of Stomatology, West China University of Medical Sciences.
Hua Xi Kou Qiang Yi Xue Za Zhi. 2000 Jun;18(3):171-3.
Direct digital radiography is a computer-based image technique, the purpose of this paper is to investigate possible usage of direct digital radiography-radio visiography (RVG) in caries detection in clinic.
A human head model with teeth was used to establish the operative exposure time for RVG in vitro, then RVG images for normal and carious tooth were obtained in vivo and were compared with conventional E-speed film in image quality and diagnostic accuracy.
The optimal exposure time for RVG image was obtained, and the exposure time was different in each tooth quarter. The acceptable rate of image quality and diagnostic accuracy of RVG was statistically equivalent to that of E-speed film (P > 0.05), however, the excellent rate of RVG was statistically superior to that of E-speed film (P < 0.05).
The conventional X-ray will be substituted by RVG in caries detection in clinic.
直接数字化放射摄影是一种基于计算机的成像技术，本文旨在探讨直接数字化放射摄影——口腔全景X线摄影（RVG）在临床龋齿检测中的可能应用。
使用带有牙齿的人头模型在体外确定RVG的手术曝光时间，然后在体内获取正常牙齿和龋齿的RVG图像，并将其与传统E速胶片在图像质量和诊断准确性方面进行比较。
获得了RVG图像的最佳曝光时间，且每个牙区的曝光时间不同。RVG图像质量和诊断准确性的可接受率与E速胶片在统计学上相当（P>0.05），然而，RVG的优秀率在统计学上优于E速胶片（P<0.05）。
在临床龋齿检测中，传统X射线将被RVG所取代。
