The purpose of this study was to investigate the challenges in comparing digital radiography (DR) systems from different vendors for various combinations of exposure factors in posterior–anterior hand radiographs. Image quality was evaluated for a range of tube voltages and tube current-time products using a technical contrast-detail (CDRAD) phantom and an anthropomorphic hand phantom. 900 technical CDRAD images were analysed providing quality figures of merit (IQFinv) and two experienced reporting radiographers using visual grading analysis (VGA) scored 108 anthropomorphic images. This study demonstrates the differences between the DR systems included. When compensating for variations in dose, Canon showed superior results for technical image quality and Fuji for visual image quality for a standard dose point at DR hand examination (ln(DAP) 1.1, 50 kV and 2.5 mAs).

中文翻译：

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六种优化后的 DR 系统的常规手检比较

本研究的目的是调查比较来自不同供应商的数字 X 射线照相 (DR) 系统在前后手 X 光片中曝光因素的各种组合所面临的挑战。使用技术对比细节 (CDRAD) 体模和拟人化手部体模评估了一系列管电压和管电流时间产品的图像质量。对 900 张技术 CDRAD 图像进行了分析，提供了品质因数 (IQFinv)，两名经验丰富的报告放射技师使用视觉分级分析 (VGA) 对 108 张拟人图像进行了评分。本研究展示了所包含的 DR 系统之间的差异。在补偿剂量变化时，佳能在 DR 手部检查的标准剂量点 (ln(DAP) 1.1,