多层螺旋CT对比剂注射流率对肝硬化患者门静脉成像延迟时间的影响*

doi:10.3969/j.issn.1672-5069.2020.04.028

摘要/Abstract

摘要： 目的探讨多层螺旋CT检查时注射对比剂流率对肝硬化患者肝门静脉(PV)成像延迟时间的影响。方法 2017年1月～2019年12月我院诊治的乙型肝炎或丙型肝炎肝硬化患者168例,均行多层螺旋CT门静脉成像(MSCTP)检查。在增强扫描注射对比剂时,将患者分成三组,每组56例,分别以2 mL/s的流速(A组)、3 mL/s的流速(B组)和4 mL/s是流速(C组)注射。结果对MSCTP图像行后处理显示,均能显示PV 3级以上分支,PV主干和左右分支明显增粗,胃底周围侧枝循环开放,肝脏和脾脏呈肝硬化改变;A组PV CT值和PV-肝实质CT值差分别为(160.8±20.2)HU和(58.3±16.5)HU,显著小于C组【分别为(184.9±26.9)HU和(75.3±15.9)HU,P＜0.05】,A组显示PV分支级别为4.6±1.3,显著小于C组(5.7±0.9,P＜0.05),A组肝实质CT值与C组比,差异无统计学意义(P＞0.05);A组PV成像延迟时间为(44.5±1.2)s,显著长于B组【(42.2±0.8)s,P＜0.05】或C组【(34.5±0.7)s,P＜0.05】,B组PV成像延迟时间也显著长于C组(P＜0.05)。结论多层螺旋CT对比剂注射流率对肝硬化患者MSCTP图像质量和PV成像延迟时间具有明显的影响,注射流率为4 mL/s时其MSCTP图像质量最佳,PV成像延迟时间最短。

关键词: 肝硬化, 多层螺旋CT, 门静脉成像, 对比剂, 流率, 诊断

Abstract: Objective The aim of this study was to investigate the impact of injected contrast velocities on portal vein imaging ofmultislice spiral computed tomography portography (MSCTP) in patients with liver cirrhosis (LC). Methods 168 patients with LC were admitted to our hospital between January 2017 and December 2019, and all of them were examined by MSCTP. When the contrast were injected, the patients were divided into three groups, with 56 in each, and in group A, the contrast was injected intravenously at velocityof 2 ml / s, in group B at 3 ml / s and in group C at 4 ml / s. Results The MSCTP was successfully performed in all patients, and the post-processing imaging showed that the smaller than grade 3 portal vain (PV) branches were clearly demonstrated, themain trunk, left and right branches of PV were significantly widened, the collateral circulation around the fundus of stomach was open, and the liver and spleen showed cirrhotic changes; the CT value of PV and thedifference of CT value of PV minus CT value of hepatic parenchyma in group A were (160.8±20.2) HU and (58.3±16.5) HU, significantly smaller than [(184.9±26.9) HU and (75.3±15.9) HU, respectively, P<0.05]in group C; the displayed PV branch in group A was 4.6±1.3, significantly lower than (5.7±0.9, P<0.05) in group C; the CT value of liver parenchyma in group A was not statistically significantly different compared with that in group C (P>0.05), while the PV delayed imaging time in group A was (44.5±1.2) s, significantly longer than that in group B [(42.2±0.8) s, P<0.05]and in group C [(34.5±0.7) s, P<0.05]; the PV delayed imaging time in group B was significantly longer than that in group C (P<0.05). Conclusion The injection velocity of contrast agent has a significant effect on MSCTP imaging quality and PV imaging delayed time in patients with liver cirrhosis. When the flow rate is 4 ml / s, theMSCTP image quality is the best and PV delayed imaging time is the shortest.

Key words: Liver cirrhosis, Multislice spiral computed tomography portolgraphy, Contrast agent, Flow velocity, Portal vein, Diagnosis

汪志亮, 胡磊, 刘啸峰. 多层螺旋CT对比剂注射流率对肝硬化患者门静脉成像延迟时间的影响^*[J]. 实用肝脏病杂志, 2020, 23(4): 564-567.

Wang Zhiliang, Hu Lei, Liu Xiaofeng. Impact of injected contrast velocities on portal vein imaging ofmultislice spiral computed tomography portography in patients with cirrhosis[J]. Journal of Practical Hepatology, 2020, 23(4): 564-567.

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多层螺旋CT对比剂注射流率对肝硬化患者门静脉成像延迟时间的影响^*

Impact of injected contrast velocities on portal vein imaging ofmultislice spiral computed tomography portography in patients with cirrhosis

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