Farman T T, Farman A G
Division of Radiology and Imaging Sciences, University of Louisville, Louisville Health Sciences Center, KY, USA.
J Digit Imaging. 1998 Aug;11(3 Suppl 1):169-71. doi: 10.1007/BF03168294.
The objective of this study was to evaluate the perceived clinical efficacy of a charge-coupled device (CCD) detector for panoramic radiography by comparing the images produced to conventional film/screen radiographs using the same machine and patient population. For clinical evaluation, 18 criteria were selected. These included overall assessment of the area of coverage, clarity of dental structures, clarity of bony outlines, specific anatomic details such as the maxillary sinus floor, mandibular canal and mandibular condyle, and region-by-region assessment of the dentition. Observers acted independently using identical optimal viewing conditions. Film and digital radiographs were evaluated separately. A five interval Likert rating scale was used. Digital images were rated superior to the conventional film radiographs for 14 criteria. Film radiographs marginally outperformed digital images for three criteria. For one criterion (periodontal bone status) the two modalities showed no difference in terms of the means ratings. It was concluded that digital images are clinically equivalent to conventional film/screen images for panoramic dental radiography.
本研究的目的是通过比较使用同一台机器和相同患者群体拍摄的电荷耦合器件（CCD）探测器全景X线摄影图像与传统胶片/增感屏X线摄影图像，评估其临床感知疗效。为进行临床评估，选择了18项标准。这些标准包括对覆盖区域的总体评估、牙齿结构的清晰度、骨轮廓的清晰度、特定解剖细节（如下颌窦底、下颌管和下颌髁）以及按区域对牙列的评估。观察者在相同的最佳观察条件下独立进行评估。分别对胶片和数字X线摄影图像进行评估。使用五分制李克特量表进行评分。在14项标准中，数字图像的评分优于传统胶片X线摄影图像。在三项标准上，胶片X线摄影图像略优于数字图像。对于一项标准（牙周骨状况），两种方式在平均评分方面没有差异。得出的结论是，在全景牙科X线摄影中，数字图像在临床上与传统胶片/增感屏图像相当。
