2.1. Information source and search

Studies were identified by searching the database PubMed (NCBI) with the following query: epilepsy AND (dwi OR dti OR dki OR “diffusion weighted imaging” OR “diffusion tensor imaging” OR “diffusion kurtosis imaging” OR “diffusion mri” OR “diffusion magnetic resonance imaging”) AND (“white matter lesions” OR “white matter abnormalities” OR “white matter anomalies” OR microstructural). Diffusion kurtosis imaging was added to the query as this technique extends tensor imaging but may provide similar FA and MD information. The search date was February 11th, 2016. Additional studies were identified by screening reference lists of downloaded full text articles.