| 螺旋CT肝脏血管成像质量影响因素探讨 |
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| 引用本文： | 邓兴杰. 螺旋CT肝脏血管成像质量影响因素探讨[J]. 中国基层医药, 2009, 16(2): 209-210. DOI: 10.3760/cma.j.issn.1008-6706.2009.02.009 |
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| 作者姓名： | 邓兴杰 |
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| 作者单位： | 惠州中心医院放射科,广东省惠州,516001 |
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| 摘 要： | 目的探讨多层螺旋CT（MSCTA）肝脏血管成像的显影参数及图像质量影响因素。方法分析80例健康者和90例肝硬化患者的肝脏血管成像技术参数，分别测量腹主动脉（AA）、门静脉（PV）、肝实质（L）的CT值，比较不同注射速率下AA、PV、L、PV—L的峰值、达峰值时间、域值、延迟时间及图象质量。结果不同注射速率（2．5ml／s、3．5ml／8、4．5ml／s）下各时间点：AA最大峰值[（223．9±16．7）Hu、（273．3±12．7）Hu、（301．3±14．6）Hu]高于PV—L[（65．1±9．5）Hu、（83．7±17．9）Hu、（96．5±15．6）Hu]（均P〈0．01）；AA达峰值时间[（46．6±3．8）s、（36．2±6．5）s、（31．4±5．8）s]低于PV-L[（56．6±4．2）s、（49．6±5．0）s、（41．6±5．8）s]（均P〈0．05）；在MSCTA图像上，注射速率4．5ml／s组显示（肝动脉：A级15例、B级4例、C级1例、D级0例，门静脉：A级15例、B级4例、C级1例）明显高于2．5ml／8组（肝动脉：A级4例、B级5例、C级10例、D级3例，门静脉：A级2例、B级12例、C级6例）（均P〈0．01）；肝硬化组的最佳预设阔值180～220Hu高于正常组150～180Hu（P〈0．05）。结论注射速率可影响MSCTA肝脏血管成像质量，健康者和肝硬化患者的MSCTA技术参数不同。
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| 关 键 词： | 体层摄影术 螺旋计算机 血管造影术 肝硬化 |
The study of optimal imaging parameters In hepatic angiography using multi-slice CT angiography |
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| DENG Xing-jie. The study of optimal imaging parameters In hepatic angiography using multi-slice CT angiography[J]. Chinese Journal of Primary Medicine and Pharmacy, 2009, 16(2): 209-210. DOI: 10.3760/cma.j.issn.1008-6706.2009.02.009 |
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| Authors: | DENG Xing-jie |
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| Affiliation: | DENG Xing-jie( Department of Radiology ,Huizhou Central Hospital ,Huizhou , Guangdong 516001, China) |
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| Abstract: | Objective To investigate the imaging parameters in hepatic angiagraphy using multi-slice CT angiography(MSCTA).Methods The imaging parameters in 80 cases of healthy persons and 90 cases with liver cirrhosis were analyzed.The value of CT with abdominal aorta(AA) ;portal vein(PV) and liver(L) were measured respectively.To compare peak;peak time;liminal value;delay time and image quality at AA;PV;L;PV-L under different injection flow rate.Results The AA maximum peak[(223.9±16.7)Hu,(273.3 ± 12.7)Hu,(301.3 ±14.6)Hu]higher than the PV-L[(65.1 ± 9.5 ) Hu,(83.7 ± 17.9) Hu,(96.5 ± 15.6) Hu ]( P＜0.01 ) ;AA reached the peak hours[(46.6 ±3.8)s,(36.2 ±6.5)s,(31.4 ±5.8) s]lower than the PV-L[(56.6 ±4.2)s,(49.6 ± 5.0) s,(41.6±5.8)s](P ＜0.05) in different injection flow rate(2.5ml/s,3.5ml/s,4.5ml/s) ;The 4.5ml/s group in MSCTA show(hepatic artery:A grade 15 cases,B grade 4 cases,C grade 1 case,D grade 0 case,the portal vein:A grade 15 cases,B grade 4 cases,C grade 1 case) were significantly higher than 2.5 ml/s group( hepatic artery:A grade 4 cases,B grade 5 cases,C grade 10 cases,D grade 3 cases,the portal vein:A grade 2 cases,B grade 12 cases,C grade 6 cases) (all P＜0.01 ).The value of liminal(180-220Hu) in hepatocirrhesis group were lower than 150-180Hu in normal group(P＜0.05).Conclusion The right MSCTA imaging parameters Could improve the image quality in patients with liver cirrhosis. |
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| Keywords: | Tomography,X-ray computed Angiagraphy Liver cirrhosis |
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