正常小肠及其系膜血管MSCT强化特征的定量研究

发布时间：2018-06-05 07:11

本文选题：小肠 + 多层螺旋CT　；参考：《临床放射学杂志》2015年07期

【摘要】：目的定量观测多层螺旋CT(MSCT)正常小肠强化参数,为小肠疾病的诊断提供参考指标。方法选择43名成人健康体检者作为研究对象,采用MSCT行腹部平扫和动脉期、门静脉期及平衡期动态增强扫描,分别在平扫和增强扫描图像上测定肠系膜上动脉、肠系膜上静脉、十二指肠、空肠及回肠的CT值。结果平扫各段小肠CT值之间的比较无统计学意义(P0.05),动态增强扫描各段小肠均以门静脉期强化最显著(P0.01),各时期各段小肠CT值之间的差异也均有统计学意义(P0.01),强化程度由高到低依次是十二指肠、空肠和回肠。各时期十二指肠、空肠、回肠CT值与肠系膜上静脉CT值均呈显著线性正相关(P0.01),而与肠系膜上动脉CT值之间均不具有相关性(P0.05)。结论正常小肠MSCT动态增强扫描以门静脉期强化最显著,并与肠系膜上静脉强化呈线性正相关,越接近小肠近段其血供越丰富,MSCT动态增强定量测量能为小肠疾病的诊断和病情评估提供有价值的影像学信息。
[Abstract]:Objective to quantitatively observe the normal intestinal enhancement parameters of multislice spiral CTT (MSCT) in order to provide a reference index for the diagnosis of intestinal diseases. Methods A total of 43 healthy adults were enrolled in this study. MSCT was used to examine the superior mesenteric artery, superior mesenteric vein and superior mesenteric vein on the plain scan and contrast enhanced images, respectively, during the period of abdominal plain scan and arterial phase, portal vein phase and balance phase. Ct value of duodenum, jejunum and ileum. Results there was no significant difference between CT values of small intestine in different sections of plain scan (P 0.05). The enhancement of portal vein phase was the most significant in each segment of small intestine by dynamic contrast enhanced scanning. The difference of CT value of small intestine in each stage was also statistically significant (P 0.01), and the enhancement procedure was also significant. The order of degrees from high to low is duodenum, Jejunum and ileum. The CT value of duodenum, jejunum and ileum was positively correlated with the CT value of superior mesenteric vein (P 0.01), but not with the CT value of superior mesenteric artery (P 0.05). Conclusion the dynamic enhancement of MSCT in the normal small intestine was most significant in portal vein phase, and was positively correlated with the enhancement of superior mesenteric vein. The closer the proximal part of the small intestine is, the richer the blood supply is. The dynamic enhanced quantitative measurement of MSCT can provide valuable imaging information for the diagnosis and assessment of small bowel diseases.
【作者单位】：第三军医大学大坪医院野战外科研究所放射科;中国人民解放军第273医院放射科;
【基金】：国家自然科学基金资助项目(编号:81071145)
【分类号】：R816.5

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