Gratt B M, Sickles E A
Oral Surg Oral Med Oral Pathol. 1981 Oct;52(4):449-54. doi: 10.1016/0030-4220(81)90349-2.
This study investigates the duplication of dental xeroradiographs using duplicating (copy) film, Polaroid photography, and Xerox photocopying. Quantitative studies of the image quality of duplicated images demonstrate similar image degradation with duplication film and Polaroid photography and gross degradation with a Xerox photocopier. Subjective diagnostic assessments by general dentists and dental specialists indicated that copies made with the use of duplication film or Polaroid photography were adequate for the reproduction of dental xeroradiographs, whereas Xerox paper copying was unacceptably poor.
本研究调查了使用复制（拷贝）胶片、宝丽来摄影和施乐复印来复制牙科干板X线片的情况。对复制图像的图像质量进行的定量研究表明，使用复制胶片和宝丽来摄影时图像退化程度相似，而使用施乐复印机时图像严重退化。普通牙医和牙科专家的主观诊断评估表明，使用复制胶片或宝丽来摄影制作的副本足以用于牙科干板X线片的复制，而施乐纸张复印的质量差得令人无法接受。
