Morphologist 2012

Questions about BrainVisa usage and installation

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houenou
Posts: 62
Joined: Tue May 31, 2005 2:28 pm

Morphologist 2012

Post by houenou »

Hi,
I have seen that in the new version of BV 4.2, the morphologist pipeline name has been changed to Morphologist "2012".
From the changelog, it is not clear what are the changes to this pipeline.
Which parts of this pipeline have been modified ? and do you recommend to re-run the pipeline with the 2012 version ?
Thanks,
Josselin
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riviere
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Posts: 1361
Joined: Tue Jan 06, 2004 12:21 pm
Location: CEA NeuroSpin, Saint Aubin, France
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Re: Morphologist 2012

Post by riviere »

Hi Josselin,

The Morphologist pipeline has been simplified, as many dead leafs of the pipeline tree have been removed because newer variants of the algorithms always perform better than the older ones. Many steps have been improved for more robustness (bias correction, histogram analysis, brain segmentation, hemispheres separation), and the grey matter segmentation accuracy has been significantly improved. Meshes of the brain benefit from the improvements in segmentations, and are also cleaner (local defects correction, the W/CSF mesh has also a spherical topology as the G/W one), and sulci extraction also.
The sulci identification algorithms have not been changed.
Re-running segmentations should lead to globally better segmentations. If you already had nice ones, it may not change completely; but if you had problems on some of your data, it should be more robust now.
For more details, ask Clara Fischer in Neurospin: it's all her work...

Denis
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