| CR静脉肾盂造影图像质量与X射线剂量的探讨 |
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| 引用本文： | 余厚军,张学昕,贺洪德,孙立军,石明国.CR静脉肾盂造影图像质量与X射线剂量的探讨[J].生物医学工程与临床,2009,13(5):407-410. |
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| 作者姓名： | 余厚军 张学昕 贺洪德 孙立军 石明国 |
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| 作者单位： | 第四军医大学西京医院放射科,陕西,西安,710032 |
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| 摘 要： | 目的探讨计算机X射线摄影（CR）在静脉肾盂造影应用中以满足图像诊断质量和X射线曝光参数（kVp、mAs）的优化组合,使X射线剂量控制在最低,降低被检者的有害X射线辐射量。方法对3组不同体型厚度（18cm、22cm、26cm）的被检者,对每组分别以常规摄影条件,增加kVp、降低mAs进行摄影。以kVp与mAs组合图像质量完全满足诊断要求,剂量最低的参数作为最优参考曝光参数。用体模替代3种被检者体型厚度,用同样摄影曝光参数,分别测量体表、体后及有关被检者器官组织的吸收X射线剂量。结果与常规摄影相比,被检者的X射线吸收剂量平均降低了31.97%,面积乘积剂量平均降低了34.57%,有效剂量降低了33.98%。结论在静脉肾盂造影中用CR成像技术与投照参数优化组合,对降低被检者的X射线吸收剂量是行之有效的,为其他投照部位用CR或数字X射线摄影（DR）数字成像参数优化组合研究提供了指导性的方法,有一定的临床应用价值。
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| 关 键 词： | 计算机X射线摄影 静脉内肾盂造影术 图像质量 X射线剂量 |
Study on image quality and X-ray dose for intravenous pyelography with CR |
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| YU Hou-jun,ZHANG Xue-xin,HE Hong-de,SUN Li-jun,SHI Ming-guo.Study on image quality and X-ray dose for intravenous pyelography with CR[J].Biomedical Engineering and Clinical Medicine,2009,13(5):407-410. |
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| Authors: | YU Hou-jun ZHANG Xue-xin HE Hong-de SUN Li-jun SHI Ming-guo |
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| Institution: | Department of Radiology;Xijing Hospital;Fourth Military Medical University;Xi'an 710032;Shaanxi;China |
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| Abstract: | Objective To study the optimized combination of the image quality and the X-ray exposure parameters(kVp,mAs)in intravenous pyelography with computed radiography(CR),and control at the minimal X-ray dose for reducing the harmful X-ray effect in patients.Methods The patients were divided into 3 groups according to body shapes:the group of thin,medium and fat patients,every group was radiographed by normal exposed condition,with increase kVp and decrease mAs performed radiograph respectively.The image could be... |
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| Keywords: | computed radiography intravenous pyelography image quality X-ray dose |
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