直接数字X线摄影与传统高千伏胸部摄影对比分析

目的　评价直接数字X线摄影术 (DR)在胸部的应用。方法　抽取我院DR胸部影像和传统高kV胸片各 10 0 0例 ,由 3位放射学医师对影像进行分析 ,分别统计甲、乙、丙及废片率 ,同时对胸部的细微结构显示率进行评价。结果　 (1)DR影像 :甲片率 5 0 6% ,乙片率 3 8 5 % ,丙片率 10 9% ,废片率 0 %。 (2 )传统高kV胸片 :甲片率 41 1% ,乙片率 44 1% ,丙片率 13 3 % ,废片率 1 5 %。 (3 )肺内的细微结构显示率 :DR影像为 10 0 0 % ,传统高kV胸片为 78 6%。经统计学处理 ,差异有非常显著性意义 (χ2 =968 6,P <0 0 0 1)。结论　DR胸部影像的诊断图像质量好于传统高kV胸片。DR系统操作简单 ,成像快捷 ,有利于放射诊断

Comparison of the quality of the chest film between digital radiography and conventional high kV radiography

Objective To evaluate the quality and usefulness of direct digital radiography system in roentgenogram of chest in clinical practice Methods 1 000 cases of chest roentgenograms with digital radiography and high kV conventional radiography were selected for analysis by 3 senior radiologists Results 1 With digital radiography system, the quality of chest film was assessed as grade A in 50 6%, grade B in 38 5%, grade C in 10 9%, and no waste film 2 With conventional high kV radiography, the quality of chest film was assessed as grade A in 41 1%, grade B in 44 1%, grade C in 13 3%, and waste film in 1 5% The direct digital radiography was statistically superior to the conventional high kV radiography 3 The fine structure of the lungs could be revealed in 100.0% of chest roentgenogram with direct digital radiograph system, which was significantly higher than that acquired with the conventional high KV radiograph (78 6%, P <0 001) Conclusion Direct digital radiography could provide the chest film with better quality than that with the conventional high kV radiography The direct digital radiography system is easy to operate, fast in capturing image and could provide post processing techniques, which will facilitate the accurate diagnosis of chest radiography