T颗粒技术在胸部高千伏摄影中的应用

APPLICATION OF T GRAIN TECHNIQUE IN HIGH KV CHEST RADIDGRAPHS

目的：提高Ｘ线照片影像质量及诊断的正确率。方法：感蓝片与感绿片的胸部高千伏正位１００例经对标准测试点影像密度值的测定，对照结构的显示，对曝光条件进行优选与比较。结果：纵隔、心后、横隔下纹理显示率绿片较蓝片高２９％。结论：Ｔ颗粒技术应用高千伏摄影获得高感度、高清晰度的影像质量。

objective:To improve th image quality of X ray film and accuracy of diagnosis Methods:High kv chest radiographs of T grain green sensitive film and blue sensitive film in 100 cases were compared by deter mining the density at standard test points and watching the structure in the lungs Results:visibility of pulmonary vessels hidden in the shadows of mediastinum heart and diaphraym in the former was higher than those in latter for 29% Conclusion:T grain technic can gain high senitivity and high resolution image This films provid additional diagnostic informations