| 共轭采集技术在头颈联合CTA中的应用 |
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| 引用本文： | 吕仁锋,谭晓天,骆承龙. 共轭采集技术在头颈联合CTA中的应用[J]. 医疗设备信息, 2011, 0(6): 18-19,22 |
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| 作者姓名： | 吕仁锋 谭晓天 骆承龙 |
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| 作者单位： | 大连市中心医院放射线科; |
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| 摘 要： | 目的研究头颈联合CTA成像采用64排128层共轭采集技术改善图像Z轴分辨率,显示细微结构的能力。方法连续选取在我院行头颈联合CTA检查的患者200例,随机分成两组。A组100例,采用128层40mm的容积数据采集。B组100例,64层40mm的容积数据采集。其它扫描参数不变。由两名有经验的影像医师以双盲法对两组图像质量进行评分,同时记录空腔、血管腔内和软组织的图像噪声值,由机器生成的剂量长度乘积计算出有效剂量,计算各组数据的均值及标准差并进行统计学分析。结果 ①两组图像质量评分分别为（3.57±0.50）分和（3.17±0.59）分,差异有统计学意义（t=7.40,P〈0.05）,A组图像质量明显优于B组。②A、B两组图像空腔、血管腔内和软组织的图像噪声值分别为14.21±1.37和16.48±1.62、10.43±0.57和14.06±1.03、20.79±1.01和24.26±1.79。组间差异有统计学意义（P均〈0.05）。③两组图像的ED值分别是（4.02±0.58）mSv和（4.09±0.60）mSv,差异无统计学意义（t=1.18,P〉0.05）。结论 头颈联合CTA成像中,采用共轭采集技术,在没有增加辐射剂量的情况下,可以有效的提高Z轴分辨率,清晰地显示组织的细微结构,整体图像质量得到明显改善。
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| 关 键 词： | 体层摄影术 X线计算机 血管造影术 动脉 噪声 |
The Application of Conjugate Acquisition Technology in Head and Neck Joint CTA |
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| LV Ren-feng,TAN Xiao-tian,LUO Cheng-long. The Application of Conjugate Acquisition Technology in Head and Neck Joint CTA[J]. Information of Medical Equipment, 2011, 0(6): 18-19,22 |
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| Authors: | LV Ren-feng TAN Xiao-tian LUO Cheng-long |
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| Affiliation: | LV Ren-feng,TAN Xiao-tian,LUO Cheng-long Department of Radiology,Central Hospital of Dalian,Dalian Liaoning 116000,China |
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| Abstract: | Objective To explore the head and neck joint CTA imaging by using conjugate acquisition technology to improve image z-axis resolution and to show the fine structures.Methods Consecutively selected 200 patients who had done CTA head and neck joint in our hospital.Randomly divided them into group A and group B with 100 examples,respectively.Collected the 40mm volume data by using level 128 for group A,while collected the 40mm volume data by using level 64 for group B.Other scan parameters were invariable.Two ... |
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| Keywords: | tomography X-ray computer angiography artery noise |
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