【摘要】 医用CT球管作为CT机的核心部件之一,电子发射系统是其设计的关键部分。本文描述了5MHU医用CT球管的电子发射系统的二维模拟计算,并且利用模拟工具探讨了焦斑尺寸与球管电压电流的关系。本文的计算结果和结论都得到了很好的实测验证。更多还原

【Abstract】 Design of electron optics is a key procedure in the reasearch &development of a medical CT tube.The simulation of electron optics is discribed in this paper,and the relation between the size of focal spot and tube voltage/current in CT tube is also studied using simulation.The results and conclusions in the paper have been verified by experiments.更多还原