Funding: the study was performed as part of the research project “Developing Indications for the Use of Hybrid PET-MRI When Planning Surgery in Patients With Epilepsy”, code: 03.02.VY.

Author contribution: all authors contributed significantly to development of the concept, the study and manuscrit writing, they read and approved the final version of the article before publishing. The most significant contributions are distributed as follows: Dolgushin MB — study concept and plan; Rostovtseva TM, Duyunova AV, Nadelyaev RV Duyunova AV, Nadelyaev RV — data acquisition and analysis; Rostovtseva TM, Duyunova AV, Beregov MM — manuscrit writing.