Photoshop图像处理软件在放疗中射野验证的应用探讨

目的 探讨利用Adobe公司Photoshop图像处理软件验证放疗位置的临床价值.方法 利用扫描仪将加速器拍摄的验证片、定位片或数字重建图像输入计算机中,调整图像大小、灰度、对比度后进行图像配准与测量.结果 通过射野验证图像与参考图像的对比发现,在左右方向、上下方向和前后方向头颈部摆位误差分别为(1.11±1.37)、(1.33±1.25)、(0.83±0.79)mm,胸部的分别为(1.44±1.03)、(1.6±1.52)、(1.34±1.17)mm;腹部的分别为(1.53±0.86)、(1.83±1.19)、(1.67±0.68)mm,盆腔部的分别为(1.93±1.83)、(1.59±1.07)、(0.85±0.72)mm.结论 利用Adobe公司Photoshop图像处理软件可以进行射野和摆位位置的准确测量且操作简单、安全可靠.

Adobe Photoshop images software in the verification of radiation portal

Objective To investigate the value of Adobe Photashop images software in the verifica-tion of radiation portal. Methods The portal and simulation films or CT reconstruction images were impor-ted into computer using a scanner. The image size, gray scale and contrast scale were adjusted with Adobe Photoshop images software, then image registration and measurement were completed. Results By the com-parison between portal image and simulation image, the set-up errors in right-left, superior-inferior and ante-rior-posterior directions were (1.11 ± 1.37) mm, (1.33 ± 1.25) mm and (0.83±0.79) mm in the head and neck;(1.44±1.03) mm,(1.6±1.52) mm and (1.34±1.17) mm in the thorax;(1.53±0.86) mm, (1.83 ± 1.19) mm and (1.67 ± 0.68)mm in the abdomen; (1.93 ± I. 83) mm, (1.59 ± 1.07)mm and (0.85 ± 0.72)mm in the pelvic cavity. Conclusions Accurate radiation portal verification and posi-tion measurement can be completed by using Adobe Photoshop, which is a simple, safe and reliable method.