| 64层CT管电流调制肺动脉成像:100 kV与120 kV对比 |
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| 引用本文： | 黄伟,徐益明,邵瑾,葛高华,卢道延,冯宇. 64层CT管电流调制肺动脉成像:100 kV与120 kV对比[J]. 中国医学影像技术, 2010, 26(10): 1960-1963 |
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| 作者姓名： | 黄伟 徐益明 邵瑾 葛高华 卢道延 冯宇 |
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| 作者单位： | 南京医科大学附属淮安第一医院CT室,江苏,淮安,223300 |
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| 摘 要： | 目的 对比观察64层CT管电流调制肺动脉成像(CTPA)中100 kV与120 kV的影像质量及辐射剂量.方法 将61例临床怀疑肺栓塞患者随机分为2组,使用64层CT,分别以100 kV(100kV组,31例)和120 kV(120kV组,30例)管电压进行肺动脉成像,均使用管电流调制技术.测量肺动脉主干、双侧肺动脉、肺叶动脉、肺段及亚段肺动脉的CT值,以肺动脉主干CT值的标准差代表图像噪声.记录容积CT剂量指数(CTDIvol)、剂量长度乘积(DLP)并计算有效剂量(ED),对两组上述指标进行t检验.使用4分法对图像质量进行主观评分,行Mann-Whitney U检验.结果 100 kV组肺动脉CT值均高于120 kV组(P＜0.05).100 kV组CTDIvol、DLP和ED均低于120 kV组(P均＜0.001).两组图像噪声和主观评分差异无统计学意义(P均>0.05).结论 与120 kV相比,100 kV 64层CT管电流调制CTPA动脉强化更好,ED更低,图像噪声和主观评分无显著差异.
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| 关 键 词： | 肺动脉 体层摄影术,X线计算机 辐射剂量 |
| 收稿时间： | 2010-04-26 |
| 修稿时间： | 2010-06-27 |
Tube current modulation pulmonary angiography with 64-slice CT: Comparison of 100 and 120 kV protocols |
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| HUANG Wei,XU Yi-ming,SHAO Jin,GE Gao-hu,LU Dao-yan and FENG Yu. Tube current modulation pulmonary angiography with 64-slice CT: Comparison of 100 and 120 kV protocols[J]. Chinese Journal of Medical Imaging Technology, 2010, 26(10): 1960-1963 |
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| Authors: | HUANG Wei XU Yi-ming SHAO Jin GE Gao-hu LU Dao-yan FENG Yu |
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| Affiliation: | CT Room, Huai'an No.1 Hospital affiliated to Nanjing Medical University, Huai'an 223300, China;CT Room, Huai'an No.1 Hospital affiliated to Nanjing Medical University, Huai'an 223300, China;CT Room, Huai'an No.1 Hospital affiliated to Nanjing Medical University, Huai'an 223300, China;CT Room, Huai'an No.1 Hospital affiliated to Nanjing Medical University, Huai'an 223300, China;CT Room, Huai'an No.1 Hospital affiliated to Nanjing Medical University, Huai'an 223300, China;CT Room, Huai'an No.1 Hospital affiliated to Nanjing Medical University, Huai'an 223300, China |
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| Abstract: | |
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| Keywords: | Pulmonary artery Tomography, X-ray computed Radiation dosage |
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