T颗粒技术在肺部疾病诊断中的应用价值及其成像质量  

Application of T grain technique to the diagnosis of lung disease and analysis of its image quality

作　　者：刘新军[1] 刘培成[1] 蔡沛[1] 张盾[1] 姚世生[2] 

机构地区：[1]新疆煤矿总医院医学影像科,乌鲁木齐830091 [2]新疆医科大学第一附属医院CT室

出　　处：《中华劳动卫生职业病杂志》2003年第3期206-208,共3页Chinese Journal of Industrial Hygiene and Occupational Diseases

摘　　要：目的　对比T颗粒胶片 (TML 1感绿片 )与硫氧化钆稀土增感屏组合同感蓝片 (XK 1)配钨酸钙增感屏两种屏 -片体系的成像质量 ,探讨T颗粒技术在肺部疾病诊断中的应用价值。方法　随机抽取井下煤工 16 0例 ,均摄同期T颗粒感绿片及感蓝片高千伏胸片 ,分别对卤化银晶体观察、增感屏荧光观察、物理条件、肺部各点密度值和胸片的观察等进行对比研究。结果　TML 1感绿片比XK 1感蓝片银盐颗粒分布更均匀 ;X线照射稀土屏绿光的亮度明显高于钨酸钙的蓝光 ;TML 1感绿片比XK 1感蓝片的曝光量减少至 1/ 3;TML 1感绿片胸片密度值为 0 .2 4～ 2 .74 ,XK 1感蓝片胸片的密度值为 0 .30～ 2 .6 0 ,感绿片有更大的宽容度 ,载有更丰富的信息量 ;圆孔观片法表明 ,TML 1感绿胸片比XK 1感蓝胸片显示微细结构更清晰 ,其形态具体可靠 ,直观性更强。结论　T颗粒技术可明显提高影像的清晰度和分辨率 ,并可提高信息传递功能 ,拓宽诊断信息。Objective To compare the image quality of T grain green sensitive film(TML-1)and Lanex Gd_2O_2S rare earth intensifying screen with that of XK-1 blue sensitive film and calcium tungstate(CaWO_4) intensifying screen,and to study the application of T grain technic to the diagnosis of lung diseases. Methods 160 coal miners were randomly selected to take both TML-1 and XK-1 chest film of high kV radiographs at the same time.Silver halide granule,fluorescence of intensifying screen,radiographic parameters,the density at different points in the lung and chest radiographs were observed. Results Silver grains in TML-1 film were more homogeneous in distribution than in XK-1 film.Luminous intensity of Lanex Gd_2O_2S rare earth intensifying screen was brighter than CaWO_4 intensifying screen in the same exposure.The exposure doses of TML-1 film was reduced to one third of XK-1 film.The density of chest radiographs was 0.24 to 2.74 in TML-1 film,and 0.30 to 2.60 in XK-1 film.There were greater exposure latitude and more informations in TML-1 film.By apertured-disc observation,the fine structure of lung in TML-1 film was clearer than in XK-1 film,the shape was more concrete and reliable,visualizability was stronger. Conclusion T grain technique may obviously improve the clearness and resolution of image,and enhance the transmission of information,as well as increase the diagnostic informations.

关 键 词：肺部疾病 X线诊断 T颗粒技术 影像质量 硫氧化钆稀土增感屏 

分 类 号：R816.4[医药卫生—放射医学]