新型便携式野战X线机支架临床应用及防护效果分析

Analysis on Clinical Application and Protective Efficacies of New Stand for Field Portable X-ray Apparatus

目的:评价新型便携式野战X线机支架的临床应用及防护效果。方法:模拟野战条件下担架搬运伤病员232例,身高165～170 cm,体质量60～65 kg,把伤病员按摄影体位分为7组,分别进行胸部、肱骨、尺桡骨、手、股骨、胫腓骨、足进行摄片,每组采用相同的条件曝光,测量支架内外X线剂量及评价X线片拍摄质量。结果:采用新型便携式野战X线机支架后,各组支架内外X线剂量(mGy/h)分别为胸部(102.2、3.1)、肱骨(24.1、0.5)、尺桡骨(25.1、0.5)、手(10.6、0.2)、股骨(41.3、1.0)、胫腓骨(39.8、0.9)、足(29.8、0.5),支架外比支架内各组总平均X线照射量率降低97.5%;X线片质量优秀223例,占总数96.1%,无不合格X线片。结论:使用新型野战便携式X线机支架可显著提高X线片拍摄质量,减少医疗工作者和伤病员不必要的X线辐射,从而提高卫勤保障能力。

Objective To evaluate the clinical application and protective efficacies of a new stand for the field portable X-ray apparatus.Methods There were 232 stretcher patients simulated in the field condition,with the heights between 165 cm and 170 cm and the weights between 60 kg and 65 kg,who were divided into seven groups according to the photography postures including the chest,humerus,ulna and radius,hand,femoral bone,tibiofibula and foot.With the same exposure factors,the X-ray doses in and out of the stand as well as the X-ray photography qualities were measured.Results With regard to the X-ray doses in and out of the stand,the values were 102.2 and 3.1 for the chest,24.1 and 0.5 for the humerus,25.1 and 0.5 for the ulna and radius,10.6 and 0.2 for the hand,41.3 and 1.0 for the femoral bone,39.8 and 0.9 for the tibiofibula,29.8 and 0.5 for the foot,respectively.The X-ray doses in the stand were reduced by 97.5% than that out of the stand.There were 223 excellent X-ray films with a ratio of 96.1%,and no unqualified ones.Conclusion The new stand for the field portable X-ray apparatus can make the photography quality enhanced and the radiation doses reduced.