MRI Segmentation of the Human Brain: Challenges, Methods, and Applications

Figure 13

(a) Joint 2D intensity histogram of -W and -W MRI of the adult brain. The associated 1D histograms of each MRI modality are plotted on the left and top. Both individual histograms consist of three overlapped Gaussian distributions that approximate the expected tissue distribution of GM, WM, and CSF. (b) The scatter plot of the tissue intensities after applying tissue segmentation. The horizontal axis represents -W intensities and the vertical axis represents -W intensities. The red cloud corresponds to GM, the green to WM, and the blue to CSF.