Background/Purpose:The cause of extrahepatic portal hypertension in children has not been clarified. Our aim was to determine the morphological features of the extrahepatic portal vein in children with extrahepatic po...Background/Purpose:The cause of extrahepatic portal hypertension in children has not been clarified. Our aim was to determine the morphological features of the extrahepatic portal vein in children with extrahepatic portal hypertension by 3-dimensional computed tomographic portography and to clarify the etiology of this disorder. Materials and Methods:Six patients ranging in age from 10 to 18 years (median age,12.8 years) who had portal hypertension presented with hematemesis. They underwent intravenous computed tomographic portography using a helical computed tomography scanner and 3-dimensional image reconstruction. Results:The extrahepatic portal vein was visualized in all patients by 3-dimensional computed tomographic portography. None of the patients showed extrahepatic portal vein obstruction or cavernous transformation. All patients had a tortuous η -shaped extrahepatic portal vein,and a line could be drawn through the flexures of the portal vein to the hepatic hilum. Conclusion:In children,extrahepatic portal hypertension is not caused by extrahepatic portal vein obstruction and may be of embryological origin.展开更多
一种3t平衡重式叉车外门架结构,利用Solidworks软件对其进行实体建模,并将模型导入Ansys-workbench软件中,在DM模块中建立相关零部件的受力区域及零件Part并在DS模块中建立以Auto Sweep if possible单元为基本单元的外门架有限元模型,...一种3t平衡重式叉车外门架结构,利用Solidworks软件对其进行实体建模,并将模型导入Ansys-workbench软件中,在DM模块中建立相关零部件的受力区域及零件Part并在DS模块中建立以Auto Sweep if possible单元为基本单元的外门架有限元模型,分析了外门架的强度,为3t平衡重式叉车外门架的设计提供了参考依据。展开更多
给出了一种3T平衡重式叉车外门架结构。利用Solidworks软件对叉车外门架进行实体建模,并将模型导入Ansys-workbench软件中,在DM模块中建立相关零部件的受力区域及零件Part并在DS模块中建立以Auto Sweep if possible单元为基本单元的外...给出了一种3T平衡重式叉车外门架结构。利用Solidworks软件对叉车外门架进行实体建模,并将模型导入Ansys-workbench软件中,在DM模块中建立相关零部件的受力区域及零件Part并在DS模块中建立以Auto Sweep if possible单元为基本单元的外门架有限元模型,分析了外门架的强度,为3T平衡重式叉车外门架的设计提供了参考依据。展开更多
文摘Background/Purpose:The cause of extrahepatic portal hypertension in children has not been clarified. Our aim was to determine the morphological features of the extrahepatic portal vein in children with extrahepatic portal hypertension by 3-dimensional computed tomographic portography and to clarify the etiology of this disorder. Materials and Methods:Six patients ranging in age from 10 to 18 years (median age,12.8 years) who had portal hypertension presented with hematemesis. They underwent intravenous computed tomographic portography using a helical computed tomography scanner and 3-dimensional image reconstruction. Results:The extrahepatic portal vein was visualized in all patients by 3-dimensional computed tomographic portography. None of the patients showed extrahepatic portal vein obstruction or cavernous transformation. All patients had a tortuous η -shaped extrahepatic portal vein,and a line could be drawn through the flexures of the portal vein to the hepatic hilum. Conclusion:In children,extrahepatic portal hypertension is not caused by extrahepatic portal vein obstruction and may be of embryological origin.
文摘一种3t平衡重式叉车外门架结构,利用Solidworks软件对其进行实体建模,并将模型导入Ansys-workbench软件中,在DM模块中建立相关零部件的受力区域及零件Part并在DS模块中建立以Auto Sweep if possible单元为基本单元的外门架有限元模型,分析了外门架的强度,为3t平衡重式叉车外门架的设计提供了参考依据。
文摘给出了一种3T平衡重式叉车外门架结构。利用Solidworks软件对叉车外门架进行实体建模,并将模型导入Ansys-workbench软件中,在DM模块中建立相关零部件的受力区域及零件Part并在DS模块中建立以Auto Sweep if possible单元为基本单元的外门架有限元模型,分析了外门架的强度,为3T平衡重式叉车外门架的设计提供了参考依据。
