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为确定正常儿童生理状态下各年龄组肝脏及门静脉的正常CT范围,为影像学判断肝脏、门静脉病理变化引起的形态异常提供量化的客观依据,对282例1～14岁正常儿童肝脏行横断扫描。依年龄分4组,分别测量肝左、右叶宽径,门静脉主干和左、右分支的宽径,门腔间隙宽径。经统计学处理,结果提示:6岁以下儿童各组数值随年龄增长相对稳定,左、右叶宽度均应小于99mm,6岁以后应小于112mm,门静脉主干与右横支在6岁以下均应小于8.5mm,6岁以后均应小于9.8mm,门腔间隙6岁以前应小于7.1mm,6岁以后应小于8.3mm。正常生理状态下随年龄增长,或感染、中毒、代谢等多种病理状态均可引起肝脏形态变化。肝脏的宽度、门静脉主干、右横支及门腔间隙等结构的宽度可直接或间接反映肝脏的病理改变,确定不同年龄组各值的正常范围可为诊断提供量化的客观依据。
To determine the normal CT range of liver and portal vein in all age groups under normal physiological conditions in children and to provide quantitative and objective evidence for morphological abnormalities caused by histopathological changes of liver and portal vein in 282 children with normal liver function, . According to the age of 4 groups, the diameter of the left and right lobes, the width of the portal vein and the left and right branches, and the width of the portal space were measured. After statistical analysis, the results suggest that the values of each group of children under 6 years of age are relatively stable with age, the left and right lobe width should be less than 99mm, after 6 years of age should be less than 112mm, the main portal vein and right transverse branch in 6 years of age should be Less than 8.5mm, after 6 years of age should be less than 9.8mm, 6 years before the door space should be less than 7.1mm, after 6 years of age should be less than 8.3mm. Under normal physiological conditions with age, or infection, poisoning, metabolism and other pathological conditions can cause liver morphological changes. The width of the liver, the width of the portal vein, the right transverse branch and the glandular space can directly or indirectly reflect the pathological changes of the liver. Determining the normal range of the values of different age groups can provide objective evidence for the diagnosis.