. Author manuscript; available in PMC: 2022 Feb 1.

Published in final edited form as: Magn Reson Imaging Clin N Am. 2021 Feb;29(1):41–52. doi: 10.1016/j.mric.2020.09.006

Table 1:

MRI imaging modality, advantage at 7T and detected epileptogenic abnormalities

Technique	Advantage at 7T	Abnormalities detected and imaging markers
T₁	Increased SNR enables higher isotropic resolution	Cortical, migrational and hippocampal abnormalities. Hippocampal subfield and thalamic subnuclei volumetrics
T₂	Increased SNR and enhanced contrast results in increased conspicuity of lesions	Cortical abnormalities (dysplasias, malformations, heterotopias), hippocampal sclerosis, lesions. Hippocampal subfield and thalamic subnuclei volumetrics
SWI	Increased sensitivity to susceptibility effects and venous anomalies	Vascular lesions, hypervascularity, and cavernomas, associated with or acting as seizure source
MRSI	Increased SNR and spectral separation.	Neuronal loss detected through NAA/Cr levels.
dMRI	Increased SNR. Hippocampal subfield- specific connectivity may be performed	Abnormal structural connectivity underlying seizure networks. Hippocampal subfield-specific tract density.
fMRI	Increased SNR and BOLD contrast	Abnormal functional connectivity in seizure networks.