Figure 5From: Magnetic microbubble-mediated ultrasound-MRI registration based on robust optical flow modelIterative segmentation process of US image with active contour model. Top: results without MMBs (a) initialization. (b) 20 iterations of US image. (c) 50 iterations of US image. (d) segmentation result. Bottom: results with MMBs (a') initialization. (b') 20 iterations of US image. (c') 50 iterations of US image. (d') segmentation result.Back to article page