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目的探讨DR的铜滤过技术在胸部高千伏摄影中的应用价值。方法使用三种不同厚度的铜(0.1mm、0.2mm、0.3mm)作滤过和不使用铜滤过作胸部的高千伏摄影,在相同厚度的铜滤过,不同体厚的患者,在相同的摄影条件、获得同等图象质量情况下进行比较。测算每种方式病人接受的体表剂量、单位面积的受射量。结果使用铜(0.1mm、0.2mm、0.3mm)滤过和不使用铜滤过在相同的摄影条件、获得同等图象质量,患者接受的X射线剂量分别是原来的24%、32%、38%。对同一厚度的铜滤过,不同体厚的高千伏摄影,其X射线减少的差异不明显。体厚越大,滤过厚度越厚,X射线减少就越明显。结论在患者接受放射线检查时,合理使用铜滤过技术,使患者受到的X射线损害最小。同时也减少了群体的射线损害,为整体的放射防护起到一个积极作用。
Objective To investigate the application of DR copper filtration technology in chest high kV imaging. Methods Three different thicknesses of copper (0.1 mm, 0.2 mm, 0.3 mm) were used as the filtered and non-copper filtered high-kv photography of the thorax. In patients with the same thickness of copper filtration and different body thickness, The same photographic conditions were obtained for the same image quality comparison. Calculate each patient’s body surface dose, the amount of radiation per unit area. Results The same imaging quality was achieved with copper (0.1 mm, 0.2 mm, 0.3 mm) and without copper filtration under the same photographic conditions, with patients accepting X-ray doses of 24%, 32%, and 38%, respectively %. For the same thickness of copper filtration, different body thickness of the high kV photography, its X-ray reduction is not obvious. The thicker the body, the thicker the filter thickness, the more pronounced the X-ray reduction. Conclusion When patients underwent radiographic examination, the rational use of copper filtration technique minimized the patient’s X-ray damage. At the same time, it also reduces the ray damage of the group and plays an active role in the overall radiological protection.