256层iCT对肝脏Couinaud分段及肝段体积测量的研究  

Segmentation and measurement for liver with 256-slice intelligent CT

作　　者：谭辉[1] 陈大治[2] 樊秋菊[2] 高永斌[2] 哈若水[2] 

机构地区：[1]宁夏医科大学,宁夏银川750002 [2]宁夏人民医院放射科

出　　处：《实用放射学杂志》2015年第3期409-412,共4页Journal of Practical Radiology

基　　金：宁夏自然科学基金项目（NZ14291）。

摘　　要：目的：采用Philips 256层 iCT（itelligent CT）对正常肝脏三维重建,测量肝脏及各肝段体积。方法收集本院健康管理中心收治48例健康体检患者资料,采用 iCT 行肝脏增强扫描,将门脉期图像传至 EBW4.5工作站专用肝脏分段软件（Liver Seg-mentation）对肝脏进行三维重建,测得肝脏体积（LV）,绘制体表面积（BSA）与肝脏体积之间散点图,得出正常人群肝脏体积与体表面积的回归方程；最后,根据Couinaud分段标准,对Ⅰ~Ⅷ段进行勾画,并测量各段体积,研究各段所占比例。结果48例正常肝脏体积为（1343.2±238.3）mL,其与体表面积呈正相关,相关系数为0.87,回归方程为肝脏体积（mL）=763.0×体表面积-28.6。Ⅰ段体积（24.5±4.3）mL、Ⅱ段（148.6±31.6）mL、Ⅲ段（110.4±24.9）mL、Ⅳ段（222.3±43.0）mL、Ⅴ段（212.8±36.5）mL、Ⅵ段（186.7±34.7）mL、Ⅶ段（164.3±30.8）mL、Ⅷ段（273.4±56.1）mL,各段占全肝体积的百分比分别为（1.8±0.2）%、（11.0±1.1）%、（8.2±1.1）%、（16.6±1.4）%、（15.9±1.0）%、（13.0±1.0）%、（12.2±0.7）%、（20.3±1.5）%。结论利用 iCT专用肝脏分段软件可重建肝脏、肝段图像,并可得到肝脏各段体积的定量数据。Objective To reconstruct the three-dimensional images of normal liver using 256-slice intelligent CT （iCT）and to measure the volume of liver and its segments.Methods 48 healthy adults underwent abdominal contrast enhancement iCT,and the images in portal venous phase were transmitted to a workstation （EBW4.5）to obtain the three-dimensional images of the liver.The total liver volume was measured,and a scatter plot was gotten between body surface area and liver volume.According to the Couinaud classification of hepatic segment ofⅠ-Ⅷ,the volume of each segment was also measured.Results The mean total liver volume in 48 adults was （1 343.2±238.3）mL,which was positively correlated with body surface area with a correlation coefficient of 0.87 and a regression equation of LV（mL）=763.0×BSA-28.6.The volume of SegmentⅠ-Ⅷ was（24.5±4.3）mL,（148.6±31.6）mL,（110.4±24.9）mL, （222.3±43.0）mL,（212.8±36.5）mL,（186.7±34.7）mL,（164.3±30.8）mL and （273.4±56.1）mL,and their percentage was （1.8±0.2）%,（11.0±1.1）%,（8.2±1.1）%,（16.6±1.4）%,（15.9±1.0）%,（13.0±1.0）%,（12.2±0.7）% and （20.3±1.5）% respec-tively.Conclusion The three-dimensional images of liver and hepatic segments can be well reconstructed by 256 slice iCT.

关 键 词：肝脏 Couinaud分段 计算机体层成像 三维重建 

分 类 号：R322.47[医药卫生—人体解剖和组织胚胎学] R814.42[医药卫生—基础医学]