See EEG in a whole new way.

EEG Electrical Source Imaging (ESI) is a neuroimaging modality
that uses a patient’s EEG data co-registered with their MRI to localize
the source of the scalp EEG signals within the patient’s brain.

It’s Accurate.

Recent research shows that with the standard IFCN 25 EEG electrode array, ESI performs well within the same range of accuracy as other conventional neuroimaging modalities used in epilepsy presurgical evaluations, reliably localizing interictal spikes across epilepsy patient populations. ¹,²,³,⁴,⁵

One study demonstrated that, using a standardized methodology and clinician input, ESI accurately localized the epileptogenic zone in 78% of 41 consecutive surgical cases. This is the same range of accuracy as other neuroimaging modalities.¹

It’s Useful.

ESI significantly contributes to clinical decision-making, providing non-redundant information and is considered to be an important part of the presurgical evaluation for all patients considering epilepsy surgery. ⁶,⁷,⁸,⁹

Now with Persyst, it’s Practical.

Perform ESI using the software, equipment and skills you already have.

Persyst ESI, powered by Epilog.
No ESI Solution is more accurate.

      • Results in 48 hours
      • Unlimited patient studies for one low annual subscription rate
      • Head model constructed from the patient’s own MRI
        • Highest resolution head model (FDM) available (3mm³)
        • 6 individual tissue types modeled
        • Parcellated into 25 sub-lobes per hemisphere
      • Distributed linear inverse method sLORETA
      • The source of each spike and spike cluster is calculated at the half-rising phase and at the peak
        • ESI pipeline relies on Persyst 14 Spike Detection and also allows user selection and manual spike marking