用影像存档与通讯系统进行影像融合

Image registration and fusion via picture archiving and communication system

目的 应用影像存档与通讯系统 (PACS)和影像融合软件进行不同显像形式图像融合的方法学探索。方法 图像的原始采集和处理分别使用Siemens螺旋CT、MR和E .CAM+ 双探头带符合线路SPECT仪。经CT、MR和核医学等科室间的PACS图像查询、传输和存取 ,用安装在SPECT仪计算机上的Medicalimagemerge(MIM)软件进行影像融合处理。原始影像容积数据用重新分层的方法创建图像 ,通过平移和旋转相关的观察端面、调节影像对比度和透明度等实现融合影像。结果 通过PACS成功地进行了CT、MR和核医学影像的传输、存取和载入 ,进行MR与核医学脑显像、CT和核医学胸部显像等的图像融合 ,获得了理想的图像。结论 应用PACS和MIM软件进行影像融合能获取良好的图像。

Objective The preliminary studies of the multimodality image registration and fusion were performed using picture archiving and communication system (PACS) and image fusion software to explore the methodology. Methods The original image volume data were acquired with Siemens Somatom Plus S CT scanner, Magneton Vision 1.5T MR and E.CAM + dual-head coincidence SPECT, respectively. The data sets from all imaging devices were acquired, retrieved, transferred and accessed via DICOM PACS. The image fusion was performed at SPECT ICON work-station, where the medical image merge (MIM)fusion software was installed. The images were created by reslicing original volume on the fly. The image volumes were aligned by translation and rotation of these view ports with respect to the original volume orientation. The transparency factor and contrast were adjusted in order that both volumes can be visualized in the merged images. Results The image volume data of CT, MR and nuclear medicine were transferred, accessed and loaded via PACS successfully. The perfectly fused images of brain MR/SPECT and chest CT/ 18 F-FDG were obtained. Conclusions The results showed that the image fusion technique using PACS was feasible and practical. Further experimentation and larger validation studies are needed to explore the full potential of the clinical use.