MIM软件CT图像自动刚性配准的准确性研究

发布时间：2018-03-12 11:19

  本文选题：MIM软件　切入点：图像配准　出处：《中国医学装备》2016年08期 　论文类型：期刊论文

【摘要】：目的:验证分析放射治疗应用靶区勾画软件MIM的CT图像自动刚性配准的准确性。方法:利用西门子SOMATOM Definition AS CT扫描机对Penta-Guide模体进行扫描,获得的CT图像作为参考图像,再将模体相对于等中心沿左右、头脚和前后3个方向移动预定的距离,以及在冠状面旋转预定角度再平移,分别进行CT扫描;所获得的CT图像以DICOM格式传输至MIM6.5.4系统,与参考图像配准,分析左右、头脚和前后方向的平移配准误差以及冠状面旋转配准误差;选择头部肿瘤患者进行患者CT图像配准的验证。结果:Penta-Guide模体在左右、头脚和前后3个方向的配准误差均1 mm,冠状面旋转方向配准误差均0.5~o。头部疾病患者在左右、头脚和前后3个方向的配准误差也1 mm。结论:MIM软件CT图像自动刚性配准的准确性好,操作简单,可应用于临床。
[Abstract]:Objective: to verify and analyze the accuracy of automatic rigid registration of CT images using target mapping software MIM in radiotherapy. Methods: Siemens SOMATOM Definition as CT scanner was used to scan Penta-Guide motifs, and the obtained CT images were used as reference images. Then the motif moves the predetermined distance from the left to the right, the head, foot and the front and rear three directions, and then rotates the predetermined angle in the coronal plane to perform CT scanning respectively, and the obtained CT images are transmitted to the MIM6.5.4 system in DICOM format. With reference image registration, the alignment errors of head, feet, head and foot and the rotation of coronal plane were analyzed. The CT image registration of patients with head tumor was verified by selecting the patients with head tumor. Results the head Penta-Guide motifs were on the left and right. The registration errors of head, foot and anterior and posterior directions are 1 mm, and the errors of rotation direction of coronal plane are 0.5 mm. The registration errors of head, feet and front and rear directions of head disease patients are also 1 mm. Conclusion the accuracy of CT image automatic rigid registration of head and foot is good. It is easy to operate and can be used in clinic.
【作者单位】： 河南省肿瘤医院放疗科;解放军总医院放疗科;武汉大学物理科学与技术学院;
【基金】：解放军总医院转化医学基金(105059)“新型追踪标记物在立体定向放疗中的研发与应用”
【分类号】：R730.55
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本文编号：1601327