Muhogora Wilbroad, Padovani Renato, Bonutti Faustino, Msaki Peter, Kazema R
Tanzania Atomic Energy Commission, Arusha, Tanzania.
J Med Phys. 2011 Jul;36(3):138-46. doi: 10.4103/0971-6203.83478.
The performances of three clinical computed radiography (CR) systems, (Agfa CR 75 (with CRMD 4.0 image plates), Kodak CR 850 (with Kodak GP plates) and Kodak CR 850A (with Kodak GP plates)) were evaluated using six tests recommended in American Association of Physicists in Medicine Report 93. The results indicated variable performances with majority being within acceptable limits. The variations were mainly attributed to differences in detector formulations, plate readers' characteristics, and aging effects. The differences of the mean low contrast scores between the imaging systems for three observers were statistically significant for Agfa and Kodak CR 850A (P=0.009) and for Kodak CR systems (P=0.006) probably because of the differences in ages. However, the differences were not statistically significant between Agfa and Kodak CR 850 (P=0.284) suggesting similar perceived image quality. The study demonstrates the need to implement quality control program regularly.
使用美国医学物理学家协会报告93中推荐的六项测试，对三种临床计算机X线摄影（CR）系统（爱克发CR 75（配备CRMD 4.0成像板）、柯达CR 850（配备柯达GP板）和柯达CR 850A（配备柯达GP板））的性能进行了评估。结果表明性能存在差异，大多数在可接受范围内。这些差异主要归因于探测器配方、平板阅读器特性和老化效应的不同。三位观察者的成像系统之间平均低对比度分数的差异，对于爱克发和柯达CR 850A（P = 0.009）以及柯达CR系统（P = 0.006）具有统计学意义，可能是由于年龄差异。然而，爱克发和柯达CR 850之间的差异无统计学意义（P = 0.284），表明感知图像质量相似。该研究表明需要定期实施质量控制程序。
