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Role of Diffusion Tensor tractography in
meningiomas and correlation between DTI
imaging and intra operative findings with
regard to dural attachment
 Diffusion tensor imaging measurements rely on
the fact that structural features of the brain
limit diffusion in some directions so that
diffusion is anisotropic.
 Diffusion tensor imaging information can be
expressed in several ways, including fractional
anisotropy (FA), which is calculated from
eigenvalues
2
Title 18/12/08
3
 The ability of the DTI to predict the exact site of
dural attachment of the meningiomas.
 Plan approach depending on the probable
attachment.
 Predict probable histology
 Trace surrounding nerves to plan surgery
4
5
 Location N=11 Correlation
 Parasagittal 2 Correlated
 Convexity 2 Correlated
 Posterior petrous 2 Correlated
 Clionoidal 3 Correlated
 Tuberculum sella 1 Correlated
 F. Magnum 1 correlated
6
7
8
Grade 1 petrous meningioma
9
10
Helps in deciding approach,and
prognosticating visual recovery
11
12
13
14
15
16
Convexity meningioma
17
18
19
20
21
22
23
24
25

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Nsi ppt

  • 1. 1 Role of Diffusion Tensor tractography in meningiomas and correlation between DTI imaging and intra operative findings with regard to dural attachment
  • 2.  Diffusion tensor imaging measurements rely on the fact that structural features of the brain limit diffusion in some directions so that diffusion is anisotropic.  Diffusion tensor imaging information can be expressed in several ways, including fractional anisotropy (FA), which is calculated from eigenvalues 2
  • 4.  The ability of the DTI to predict the exact site of dural attachment of the meningiomas.  Plan approach depending on the probable attachment.  Predict probable histology  Trace surrounding nerves to plan surgery 4
  • 5. 5
  • 6.  Location N=11 Correlation  Parasagittal 2 Correlated  Convexity 2 Correlated  Posterior petrous 2 Correlated  Clionoidal 3 Correlated  Tuberculum sella 1 Correlated  F. Magnum 1 correlated 6
  • 7. 7
  • 8. 8 Grade 1 petrous meningioma
  • 9. 9
  • 10. 10 Helps in deciding approach,and prognosticating visual recovery
  • 11. 11
  • 12. 12
  • 13. 13
  • 14. 14
  • 15. 15
  • 17. 17
  • 18. 18
  • 19. 19
  • 20. 20
  • 21. 21
  • 22. 22
  • 23. 23
  • 24. 24
  • 25. 25