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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

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Title 18/12/08

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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

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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

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Grade 1 petrous meningioma

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Helps in deciding approach,and prognosticating visual recovery

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Convexity meningioma

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