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Virtual pregnant women modeling

Virtual pregnant women modeling. S. Dahdouh, A. Serrurier, J. Anquez, J-P. de la Plata, E. Angelini, I. Bloch. 8 10 12 14 18 22 28 34. A wide variety of data types. Embryo modeling. US Segmentation. US Segmentation. US Segmentation. US Segmentation. Fetal modeling.

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Virtual pregnant women modeling

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  1. Virtual pregnant women modeling S. Dahdouh, A. Serrurier, J. Anquez, J-P. de la Plata, E. Angelini, I. Bloch

  2. 8 10 12 14 18 22 28 34 A wide variety of data types

  3. Embryo modeling

  4. US Segmentation

  5. US Segmentation

  6. US Segmentation

  7. US Segmentation

  8. Fetal modeling

  9. Collection of fetuses conserved in formalin at the Lab of Anatomy in Montpellier (Fr) • In formalin for several decades • Up to ~20 WA • Scan in μCT (res. 36 μm) • Quality very variable, possibly very little contrast, little ossification possibly gone with formalin In vitro Data collection

  10. Selection of pregnant women having full trunk scanned • Hi-quality CT data • In vivo medical exams for adults at the University Hospital of Kremlin-Bicêtre (Fr) In vivo Data collection

  11. In vivo fetal 3D MRI • 3D US In vivo Data collection

  12. Need to develop different kind of segmentation methods depending on the type of data Data segmentation

  13. Deformation for each bone (or bony structure) for all the skeleton of the database (landmarks, MLS, kriging) Generic skeleton Topology unification

  14. Structures alignment and interpolation

  15. 20 WA 25 WA 30 WA Skeleton reconstruction

  16. Skeleton reconstruction

  17. Skeleton reconstruction

  18. Envelope reconstruction and Soft tissues positioning

  19. Non pregnant woman generic envelope Sub-cutaneous fat modeling during pregnancy Woman modeling

  20. UFU insertion

  21. ROBUST AND SCALABLE INTERACTIVE FREEFORM MODELING OF HIGH DEFINITION MEDICAL IMAGES Noura Faraj, Jean-Marc Thiery, Isabelle Bloch, Nadège Varsier, Joe Wiart and Tamy Boubekeur

  22. Dosimetry studies High Definition segmented medical images Simulations

  23. Study of a given phenomena on acquired 3D medical images Study the simulation variability given different postures Limited by the acquisition posture Lying down posture Dosimetry simulations Deformation pre-process

  24. Cage based deformation High resolution model Low resolution embedding cage Cage coordinates computation Cage deformation High resolution model deformation

  25. Linear deformation of the embedded space [Lipman 2008] As-Rigid-As-Possible cage deformation [Sorkine 2007] Piecewise linear motion- adaptive deformation structure Global deformation Non-linear 10^3 vertices Local deformation Linear 10^9 voxels Global deformation Linear 10^6 vertices VoxMorph in a nutshell

  26. VoxMorph in a nutshell

  27. Applications

  28. Development of: • Medical images segmentation methods • Fetal growth modeling tool • UFU modeling • High dimensional meshes deformations Contributions

  29. Questions?

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