医学图象体数据场的剖切显示方法  

The Section Display Method for Medical Image Volume Dataset

作　　者：王立功[1] 于甬华[2] 罗立民[1] 

机构地区：[1]东南大学生医系影像科学与技术实验室,南京210018 [2]山东省肿瘤医院放疗科,济南250117

出　　处：《中国图象图形学报（A辑）》2003年第7期769-773,共5页Journal of Image and Graphics

摘　　要：为了给医生提供一些全面、直观和准确的诊断信息 ,讨论了一种对医学图象体数据场进行二维和三维剖切显示的方法 ,其中对于二维剖切显示 ,可首先由用户通过人机交互的方式来给出对体数据场进行任意剖切显示的路径 ;然后运用反求工程的求解思路沿切割路径进行量化和采样来得到沿切割路径上每个采样点在对应图象坐标空间中的位置 ,并由此获得剖切平面上所有采样点的空间位置坐标 ;最后通过对体数据场进行重采样和插值操作来实现对空间体数据场的二维任意剖切显示 .对于三维剖切显示 ,可首先采用与二维剖切操作类似的图象采样和插值操作来获得纹理数据阵列 ,然后结合纹理映射技术 ,将纹理数据映射到三维坐标空间中 。In order to provide doctors with comprehensive, visual, and accurate diagnostic information, the 2D and 3D section display method for medical image volume dataset is discussed. For the case of 2D section, by means of human computer interaction, the path of arbitrary section is given by the user, then the operation of quantization and sampling is implemented by virtue of solution train of thought of reverse engineering, each point position along the path is attained, so is each point on the section plane. Through the operation of resampling and interpolation, the 2D arbitrary section display for medical image volume dataset is realized. As to the 3D case, by using the same image sampling and interpolation operation as those in the 2D case to get the texture data array, then in combination with the technique of texture mapping, mapping the texture data into the 3D coordinate space, thus the result of 3D spatial section display is achieved.

关 键 词：医学图象 体数据场 剖切显示 纹理映射 图象插值 

分 类 号：R445[医药卫生—影像医学与核医学] TP391.41[医药卫生—诊断学]