目的 研制直线加速器床辅助控制系统,解决现有SIEMENS Primus直线加速器床摆位不方便的问题.方法 系统由上位机和下位机组成.上位机软件发送信号给下位机及控制电路,下位机接受指令并驱动电路执行相应的操作;红外跟踪定位系统将指令反馈病灶中心位置,放疗医师在监控室操作加速器面板上的按键实现加速器床的移动.结果 通过实验调试,系统能够准确地控制执行机构的动作,且电磁铁运行受阻时,上位机软件会显示发送错误,提示放疗医师处理.结论 本系统用于直线加速器,可以解决加速器治疗床摆位不变问题.%Objective The study is to provide a solution for SIEMENS Primus linear accelerator, whose bed has an inconvenient positioning problem. Methods The system consists of an upper computer and a lower computer. The upper computer sends signals to the lower computer and control circuit. Then the lower computer accepts instructions and drives circuit to perform the appropriate actions. The infrared tracking and positioning system feeds back the location of the lesion center. The radiotherapy doctor operates the buttons on the front panel of linear accelerator to move the bed in the control room. Results By testing the upper computer, the system can accurately control the action of the implementing agencies. When the movement of electromagnet is blocked, the software of upper computer will display the sending error, suggesting radiotherapy doctors to handle the error. Conclusion The system used for linear accelerator can help to position the linear accelerator bed to target location quickly.
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