Versteeg C H, Sanderink G C, van der Stelt P F
Department of Oral Radiology, Academic Centre for Dentistry, Amsterdam, The Netherlands.
J Dent. 1997 May-Jul;25(3-4):215-24. doi: 10.1016/s0300-5712(96)00026-7.
This article emphasizes the comparison of intra-oral digital imaging to film-based imaging. Additional possibilities of digital imaging that may contribute to system efficacy are discussed as well.
The main subjects for research in digital imaging are image quality, image acquisition, diagnostic quality, image manipulation, automated analysis, and application software.
Representative articles on these subjects from the international literature are used for this review. Indirect digital imaging still requires film processing, sophisticated film digitizers, and time to digitize film. Although it is not an efficient method for the dental practice, digitization can be very useful for quantitative analysis of radiographs. Direct digital imaging is more efficient than indirect digital imaging. The main advantages are (semi) real time imaging, low X-ray dose requirements, and no need for chemical processing. In spite of a more limited resolution of the images, direct imaging may perform as accurately as film-based imaging. Direct image plate systems can well be used, for instance, for full-mouth series. The main application of direct sensor systems appears to be endodontology and implantology. In summary, direct digital imaging may be as efficient as film-based imaging in clinical dentistry. The computer provides for many additional options in digital imaging, such as the digital storage, compression, and exchange of radiographic information. Image manipulation (e.g. image enhancement, subtraction radiography and image reconstruction) and automated analysis may benefit radiodiagnosis.
It can be concluded that digital imaging certainly has great potential, especially with respect to improvement of diagnostic quality and automated image analysis.
本文着重比较口腔内数字成像与基于胶片的成像。还讨论了数字成像可能有助于提高系统效能的其他可能性。
数字成像研究的主要主题包括图像质量、图像采集、诊断质量、图像处理、自动分析和应用软件。
本综述使用了国际文献中关于这些主题的代表性文章。间接数字成像仍需要胶片冲洗、复杂的胶片数字化仪以及数字化胶片的时间。尽管它对牙科实践来说不是一种高效的方法，但数字化对于X线片的定量分析可能非常有用。直接数字成像比间接数字成像更高效。其主要优点是（半）实时成像、低X射线剂量要求且无需化学处理。尽管图像分辨率更有限，但直接成像的准确性可能与基于胶片的成像相当。例如，直接影像板系统可很好地用于全口系列检查。直接传感器系统的主要应用似乎是牙髓病学和种植学。总之，在临床牙科中，直接数字成像可能与基于胶片的成像一样高效。计算机在数字成像中提供了许多额外的选项，如X线影像信息的数字存储、压缩和交换。图像处理（如图像增强、减影X线摄影和图像重建）和自动分析可能有益于放射诊断。
可以得出结论，数字成像确实具有巨大潜力，特别是在提高诊断质量和自动图像分析方面。
