These models are for 3.1 graphs which include cortical thickness information. They may be used for morphometry, but not for sulcal recognition yet because they have not been trained on a suitable database.
These models provide descriptive figures in Talairach space when possible, which was not always what the older models (2000-2001, FD2) used to do. They are based on the "Fold Descriptors 4" generation, which complete and improve the models based on "Fold Descriptors 2/3". Descriptors which are not documented here are documented on those older models documentation.
We may provide in the future a vartiant of these models which act in native space rather than in Talairach space, which may be useful in some morphometry studies.
| index: | name: | description: |
| 1. | valid | |
| 2. | extremitiesValid | |
| 3. | extremity1x | |
| 4. | extremity1y | |
| 5. | extremity1z | |
| 6. | extremity2x | |
| 7. | extremity2y | |
| 8. | extremity2z | |
| 9. | gravityCenter_x | |
| 10. | gravityCenter_y | |
| 11. | gravityCenter_z | |
| 12. | normalValid | |
| 13. | normal_x | |
| 14. | normal_y | |
| 15. | normal_z | |
| 16. | direction_x | |
| 17. | direction_y | |
| 18. | direction_z | |
| 19. | surface | Be careful that the surface now replaces the volume from older models. |
| 20. | geodesicDepthMax | |
| 21. | geodesicDepthMin | |
| 22. | geodesicDepthMean | Mean geodesic depth of the sulcus. This feature did not exist in older models |
| 23. | connectedComponentsAllRels | |
| 24. | connectedComponents | |
| 25. | pureCortical | |
| 26. | distanceBetweenComponentsMax | |
| 27. | plisDePassage | |
| 28. | hullJunctionsLength | This is now the "real" geodesic length of the sulcus. It replaces the size (of voxels, in mm3) from older models. |
| 29. | GM_thickness | Mean grey matter thickness in the sulcal zone (voronoi zones of nodes forming the sulcus). |
| 30. | fold_opening | Fold opening index. It is calculated as the CSF volume in the fold divided by the surface of the sulcus (of the skeleton), so it indicates a mean thickness of the CSF in the fold. |
| 31. | fold_descriptor4_output | Just random. Don't use it in current models ! |
Currently, the relations are the same as the older models.