| 双源CT低管电压降低冠状动脉CTA辐射剂量 |
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| 引用本文： | 晏子旭,张兆琪,徐磊,范占明,杨琳,李志敏,郭淼,肖金利. 双源CT低管电压降低冠状动脉CTA辐射剂量[J]. 中国医学影像技术, 2009, 25(9): 1614-1616 |
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| 作者姓名： | 晏子旭 张兆琪 徐磊 范占明 杨琳 李志敏 郭淼 肖金利 |
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| 作者单位： | 首都医科大学附属北京安贞医院影像科,北京,100029 |
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| 摘 要： | 目的 观察低管电压在体质指数(BMI)正常范围患者双源CT冠状动脉成像(CTA)中的应用,并评价其图像质量.方法 将65例BMI在正常范围并接受冠状动脉CTA检查的患者随机分为两组,A组管电压采用常规扫描120 kV,B组管电压采用100 kV,均采用回顾性心电门控螺旋扫描.对两组扫描的冠状动脉分别做图像处理,应用秩和检验比较两组患者冠状动脉段图像质量总体评分,两独立样本t检验比较两组患者的辐射剂量和对比剂用量. 结果 A组评价443段冠状动脉,B组评价451段冠状动脉.A组图像质量评价为优和良好的占97.74%,B组占97.56%.冠状动脉段图像质量评分两组之间比较差异无统计学意义(P=0.126).A组平均有效剂量为(15.04±2.42)mSv;B组平均有效剂量为(7.95±1.69)mSv,差异有统计学意义(P＜0.001).A组对比剂用量为(75.17±3.69)ml,B组对比剂用量为(62.27±3.42)ml,差异有统计学意义(P＜0.001). 结论 对于BMI在正常范围内的患者,冠状动脉CTA检查时管电压设为100 kV可在保证图像质量的同时显著降低辐射剂量和对比剂用量.
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| 关 键 词： | 体层摄影术 X线计算机 冠状动脉 低辐射剂量 |
| 收稿时间： | 2009-02-26 |
| 修稿时间： | 2009-05-13 |
Low tube voltage in reduction of radiation dose in dual-source CT coronary angiography |
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| YAN Zi-xu,ZHANG Zhao-qi,XU Lei,FAN Zhan-ming,YANG Lin,LI Zhi-min,GUO Miao and XIAO Jin-li. Low tube voltage in reduction of radiation dose in dual-source CT coronary angiography[J]. Chinese Journal of Medical Imaging Technology, 2009, 25(9): 1614-1616 |
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| Authors: | YAN Zi-xu ZHANG Zhao-qi XU Lei FAN Zhan-ming YANG Lin LI Zhi-min GUO Miao XIAO Jin-li |
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| Affiliation: | Department of Medical Imaging, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China;Department of Medical Imaging, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China;Department of Medical Imaging, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China;Department of Medical Imaging, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China;Department of Medical Imaging, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China;Department of Medical Imaging, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China;Department of Medical Imaging, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China;Department of Medical Imaging, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China |
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| Abstract: | |
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| Keywords: | Tomography, X-ray computed Coronary artery Low radiation dose |
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