利用数字减影图像和传统X线片诊断牙槽骨变化：一项体外研究

Diagnosis of alveolar bone changes with digital subtraction images and conventional radiographs. An in vitro study.

作者信息

Nicopoulou-Karayianni K, Brägger U, Bürgin W, Nielsen P M, Lang N P

机构信息

Department of Oral Diagnosis, School of Dental Medicine, University of Athens, Greece.

出版信息

Oral Surg Oral Med Oral Pathol. 1991 Aug;72(2):251-6. doi: 10.1016/0030-4220(91)90172-9.

DOI:10.1016/0030-4220(91)90172-9

PMID:1923405

Abstract

The purpose of the present study was to compare the diagnostic properties of radiographs obtained with Ultra-Speed and Ektaspeed films when analyzed conventionally radiographs and after conversion in digital subtraction images. Artificial lesions, measuring 0.5, 0.7, 0.9, and 1.1 mm in diameter, were drilled in a dry skull with slow-speed burs. Standardized radiographs were obtained by means of acrylic bite blocks and a modification of the Rinn system. The results of this study demonstrated that sensitivity in the detection of the lesions was doubled after digitizing and displaying subtraction images compared with the conventional radiographic interpretation, independent of the use of Ektaspeed or Ultra-Speed films for the original radiographs. The diagnostic information seemed to be equal in radiographs obtained from Ultra-Speed and Ektaspeed films after digitization and image processing procedures.

摘要

本研究的目的是比较在传统X线片分析以及转换为数字减影图像后，使用超高速胶片和爱克发速胶片获得的X线片的诊断特性。使用低速牙钻在干燥颅骨上钻出直径为0.5、0.7、0.9和1.1毫米的人工病变。通过丙烯酸咬块和改良的林恩系统获得标准化X线片。本研究结果表明，与传统X线片解读相比，数字化并显示减影图像后，病变检测的灵敏度提高了一倍，这与原始X线片使用爱克发速胶片还是超高速胶片无关。在数字化和图像处理程序后，从超高速胶片和爱克发速胶片获得的X线片中，诊断信息似乎是相同的。