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. Author manuscript; available in PMC: 2009 Oct 27.
Published in final edited form as: IEEE Trans Med Imaging. 2007 Sep;26(9):1201–1212. doi: 10.1109/TMI.2007.901433

Fig. 2.

Fig. 2

The relationships of anatomical structures are represented as a tree. Here, background (BG) and intra-cranial cavity (ICC) define the first task while cerebrospinal fluid (CSF), gray matter (GM), and white matter (WM) comprise the second task.