摘要
目的 观察三维二值掩模零化法联合体素绘制法对于切割及渲染CT与MRI体积数据的作用。方法 利用Matlab软件将DICOM形式头颈部CT、腹部平扫CT、正常头部MR T1WI及脑胶质瘤T1WI转化为体积数据,以半自动或手动方法获得相应掩模图像;基于原始掩模以零化法在x、y、z轴方向对体积数据进行正向与反向切割,结合三维体素绘制法对切割后的模型进行渲染。结果 所获目标结构原始掩模可在体素绘制后突出显示CT及MRI数据中的相应解剖结构。基于体素绘制法实现了以三维二值掩模零化法与原体数据点积后切割模型,结合手动输入不同阈值进行切割可显示脑胶质瘤及其毗邻结构。结论 三维二值掩模零化法联合体素绘制法可结合不同层面CT与MRI体积数据显示其内部结构。
Objective To observe the role of 3D binary mask zeroing combined with voxel rendering for cutting and rendering CT and MRI volume data.Methods Matlab software was used to convert DICOM data of head and neck CT,abdominal plain CT,normal head MR T1WI and brain glioma T1WI into volume data,and the corresponding mask images were obtained semi-automatically or manually.Zeroing method was used for forward cutting and reverse cutting volume data based on the original mask at the x,y,and z axes,then combined with voxel rendering method to render the cut model.Results Good original mask of the target structures were obtained with semi-automatic threshold based on CT and MRI data,which could highlight the corresponding anatomical structures after voxel rendering.Then a cutting model was realized with 3D binary mask zeroing method and dot product of the original data based on voxel rendering method,which could show structures adjacent to glioma combined with different manual thresholds.Conclusion 3D binary mask zeroing combined with voxel rendering could perform arbitrary triaxial cutting of CT and MRI volume data,display internal structures through combining different slices of volume data.
作者
田野
戴燕飞
季达峰
TIAN Ye;DAI Yanfei;JI Dafeng(Department of Medical Informatics,Nantong University Medical School,Nantong 226001,China;Department of Medical Imaging,Nantong University Affiliated Hospital Branch,Nantong 226001,China)
出处
《中国医学影像技术》
CSCD
北大核心
2023年第11期1721-1725,共5页
Chinese Journal of Medical Imaging Technology
基金
南通市科技计划项目(MS12021089)。
关键词
体层摄影术
X线计算机
磁共振成像
零化法三轴切割
体素渲染
tomography,X-ray computed
magnetic resonance imaging
three axial cutting with zero treatment
voxel rendering
