Three-Dimensional Reconstruction of Breast MRI Masses Based on Improved Marching Cubes Algorithm
Juan Zhang · Chuangan jishu xuebao · 2013
MRI(Magnetic Resonance Imaging)has become one of the primary means of breast cancer ' s diagnosis.An improved method based on MC(Marching Cubes)surface rendering algorithm is proposed,which is applied to the three-dimensional reconstruction of the breast MRI masses.By analyzing the imaging characteristics of breast MRI sequences and the correlation between adjacent layers,which include the similarity of adjacent interframe image gray distribution and mass organizations shape,an isosurface extraction algorithm based on RSF(Region-scalable Fitting)is proposed firstly.Then,in accordance with the conditions of the overlapping area of each frame with its front and rear frame the bigger the better,filter the results obtained under the multiple sets of parameters to optimize the extraction of contour surface.Finally,simplify a large number of triangular mesh generated in surface rendering,by using the triangular folding method based on weighted quadratic error metric.The proposed method was applied to 30 cases of breast MRI sequence diagram and the experimental results showed that it performed better than the conventional MC algorithm on the accuracy and speed of rendering for three-dimensional reconstruction of the breast MRI masses.