目的：在实施精确放射治疗过程中，随呼吸运动而运动的人体器官要达到一定的精度较为困难。许多胸腹部器官均会伴随呼吸运动产生一定程度的偏移，需对偏移通过各种方法进行补偿。根据临床实际需求，研制出一套新型精确放射治疗中肿瘤靶区呼吸控制系统。方法：基于现有主动呼吸控制系统的组成结构与思路，研制由气囊、控制箱、患者手柄开关、电脑、控制箱、气囊自动控制器、呼吸传感器及通讯工具等构成的新型精确放射治疗中肿瘤靶区呼吸控制系统，选用Pneumotach型的PowerCube肺功能的呼吸传感器，运用C++高级编程语言编写呼吸控制系统的软件程序。结果：可较好地帮助患者进行呼吸控制，减少肺部肿瘤随人体呼吸运动而发生偏移，提高治疗准确性。结论：该系统集弥散、振荡及通气等功能于一体，可实现在现有仪器上进行改装，达到放射治疗中肿瘤靶区呼吸控制的设计目的，并成功用于临床。%Objective:It is more difficult to conduct precision radiotherapy for organs of the human body with the respiratory movement. It is necessary to compensate a certain degree of deviation which is produced by many thoracic and abdominal organs with breathing exercises. To develop a new breathing control system of tumor target for precision radiotherapy is the practical demand in hospital.Methods: According to the current active breathing control system, there are gasbag, control box, handle switch for the patients, computer, automatic gasbag controller, respiratory sensor and communication tools. The Pneumotach PowerCube pulmonary function respiratory sensor and C++ high level programming language were selected to program the breathing control system.Results: The system could make patients conduct respiratory control better, reduce the deviation of pulmonary tumor caused by respiratory movement and improve the accuracy of treatment.Conclusion: The system had a lot of functions, such as dispersion, oscillation, ventilation and so on. It is refitted on the current instruments and successful to clinical application.
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