阮长利 宋启斌 张军 吴冰 付敬国 周丁屹 郑永法

    [摘要] 目的 探讨3D打印技术在放疗铅挡块制作中的应用效果。 方法 患者在模拟机上进行摆位和体位固定，并拍摄定位片，根据医生所勾画靶区进行研发的3D打印技术制作模型用于铅挡块的制作，制作好的铅挡块在验证柜上进行固定，跟定位室拍摄的肿瘤靶区形状比对，检查灯光野及遮挡范围与定位室拍摄肿瘤靶区形状是否一致。 结果 3D打印射野铅挡块的制作，使照射野的形状与靶区形状吻合一致，并且使铅挡块的制作成本更加低廉、更加方便、更加准确。 结论 3D打印技术制作射野铅挡块在放射治疗中被证实为行之有效的、可以推广的、成本更加低廉的铅挡块制作方法。

    [关键词] 3D打印技术;射野铅挡块;精确放疗;质量保证

    [中图分类号] R815.2 ? ? ? ? ?[文献标识码] A ? ? ? ? ?[文章编号] 1673-7210(2018)12(c)-0052-03

    [Abstract] Objective To study the application effect of 3D printing technology in the manufacture of lead block for radiotherapy. Methods Patients in the simulator for placement and fixed position， and orientation films， according to the doctors by target areas for research and development of 3D printing to lead block is making model of production， making good lead block in the validation on fixed， with positioning chamber of tumor target shape， check wild and keep out of the light shooting with positioning room tumor target shapes are consistent. Results 3D printing of the production of the shooting field lead block makes the shape of the irradiation field coincide with the shape of the target area ......