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Current Status and Future Prospective of Neuroimaging for Epilepsy

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Epilepsy Towards the Next Decade

Part of the book series: Contemporary Clinical Neuroscience ((CCNE))

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Abstract

Although the diagnosis of epilepsy remains mainly clinical, Magnetic Resonance Imaging (MRI) plays a crucial role in the detection of lesions that can cause epilepsy, with high impact on the diagnostic work-up as well as on therapeutic planning. Morphologic MR imaging is still the main technique for identifying lesions responsible for the epilepsy, providing images with high spatial resolution, excellent soft-tissue contrast, and multiplanar view. Quantitative MR image analysis (segmentation, voxel-based morhometry), based on 3D T1-weighted images, offers an objective means of analyzing MR images thereby improving the capability of detecting subtle lesions, often interpreted as negative by qualitative assessment of the morphologic MR imaging. Diffusion tensor imaging allows the quantification of water molecules diffusion and characterizes the degree and direction of anisotropy. Areas of abnormal diffusion, responsible for epilepsy, may be related to occult dysgenesis, or to acquired damage, resulting in neuronal loss, gliosis, and extracellular space expansion; these changes often result in reduced anisotropy and in an increase in mean diffusivity. Magnetic resonance spectroscopy provides information about the biochemical environment of the brain, thereby helping in lateralizing the epilepsy focus. Functional MR imaging is used for lateralizing language functions, and also for surgical planning predicting functional deficits following epilepsy surgery. The interpretation of MR data should always be done by a neuroradiologist expert in the field of epilepsy imaging, trying to correlate the images with clinical and electrophysiological data.

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Authors and Affiliations

  1. Department of Advanced Biomedical Sciences, Neuroradiology Unit, Federico II University, Naples, Italy

    F. Caranci, F. D’Arco, A. D’Amico, C. Russo, F. Briganti & E. Tedeschi

  2. Institute of Biostructures and Bioimaging, National Research Council, Naples, Italy

    M. Quarantelli

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  1. F. Caranci
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  2. F. D’Arco
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  3. A. D’Amico
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  4. C. Russo
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  5. F. Briganti
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Correspondence to F. Caranci .

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  1. DINOGMI, University of Genoa, Genova, Genova, Italy

    Pasquale Striano

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Caranci, F. et al. (2015). Current Status and Future Prospective of Neuroimaging for Epilepsy. In: Striano, P. (eds) Epilepsy Towards the Next Decade. Contemporary Clinical Neuroscience. Springer, Cham. https://doi.org/10.1007/978-3-319-12283-0_7

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