Visible Human with Cerebro-Spinal Fluid (CSF) labeling

To label the human head with anatomical tissues including the CSF, we propose two approaches.

The first one depends on the following remarks: first the brain and the CSF are strongly imbricated. Secondly, in practical the CSF bounds the brain, but this is not always the case on the MRI. Thus, we propose to soften the topological constraints for the brain and the CSF. Indeed, after the skull labeling, the set of non-labelled tetrahedra contains CSF and brain. So, we label these tetrahedra with CSF if they contain a majority of Cerebro-Spinal Fluid (according to the MRI) or with BRAIN if not. We can see the results of this approach at the following links : n=4 and n=5.

In the second approach, we assume that the CSF bounds the brain. But we can also find CSF inside the brain. So, we first label with CSF a minimal set of tetrahedra by an interior erosion using sequential removal of simple tetrahedra. This minimal set is homotopic to an empty sphere. Then, we cover the non-labeled tetrahedra and we label them with CSF if they contain a majority of CSF or with BRAIN if not.

Here we can see a simplified mesh: little isolated components have been removed.

See also results obtained from a MRI of a child.

I. Introduction II. Topological tools III. Method to label the head IV. First results and remarks V. Results with n=5 VI. Numerical values VII. Visible Human with CSF : n=4 - n=5

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