【摘要】 提出了一种基于外标记点的无框架配准方法.该方法首先建立参考坐标系,接着根据外标记点在两幅2D图像中的对应坐标,求出2D图像像素坐标到参考坐标系的转换关系,然后根据外标记点在3D图像坐标系中的坐标,求解3D图像坐标系和参考坐标系的转换矩阵,通过一组矩阵运算,从而实现2D/3D图像的配准.临床图像的实验结果表明,该方法的配准精度为(0.026 7±0.044 7)mm.更多还原

【Abstract】 A new frameless registration of 2D/3D images based on external markers was presented.In this method,a reference coordinate system(RCS) is constructed,the relation of the coordinate of pixel in two 2D images and RCS is computed.Then the conversion matrix between 3D image coordinate system(3DICS) and RCS is computed according to the coordinate of external markers in 3DICS.The registration of 2D/3D images can be realized by the matrices operation.The experimental results on clinical images show that the registration accuracy of this method was(0.026 7±0.044 7) mm.更多还原