7T Epilepsy Task Force Consensus Recommendations on the Use of 7T MRI in Clinical Practice

Author:

Opheim GiskeORCID,van der Kolk AnjaORCID,Bloch Karin MarkenrothORCID,Colon Albert J.ORCID,Davis Kathryn A.,Henry Thomas R.,Jansen Jacobus F.A.ORCID,Jones Stephen E.,Pan Jullie W.,Rössler Karl,Stein Joel M.ORCID,Strandberg Maria C.,Trattnig SiegfriedORCID,Van de Moortele Pierre-FrancoisORCID,Vargas Maria IsabelORCID,Wang Irene,Bartolomei Fabrice,Bernasconi Neda,Bernasconi Andrea,Bernhardt Boris,Björkman-Burtscher IsabellaORCID,Cosottini MircoORCID,Das Sandhitsu R.,Hertz-Pannier LucieORCID,Inati SaraORCID,Jurkiewicz Michael T.ORCID,Khan Ali R.,Liang Shuli,Ma Ruoyun EmilyORCID,Mukundan Srinivasan,Pardoe HeathORCID,Pinborg Lars H.,Polimeni Jonathan R.ORCID,Ranjeva Jean-Philippe,Steijvers Esther,Stufflebeam Steven,Veersema Tim J.,Vignaud Alexandre,Voets Natalie,Vulliemoz Serge,Wiggins Christopher J.,Xue Rong,Guerrini Renzo,Guye MaximeORCID

Abstract

Identifying a structural brain lesion on MRI has important implications in epilepsy and is the most important factor that correlates with seizure freedom after surgery in patients with drug-resistant focal onset epilepsy. However, at conventional magnetic field strengths (1.5 and 3T), only approximately 60%–85% of MRI examinations reveal such lesions. Over the last decade, studies have demonstrated the added value of 7T MRI in patients with and without known epileptogenic lesions from 1.5 and/or 3T. However, translation of 7T MRI to clinical practice is still challenging, particularly in centers new to 7T, and there is a need for practical recommendations on targeted use of 7T MRI in the clinical management of patients with epilepsy. The 7T Epilepsy Task Force—an international group representing 21 7T MRI centers with experience from scanning over 2,000 patients with epilepsy—would hereby like to share its experience with the neurology community regarding the appropriate clinical indications, patient selection and preparation, acquisition protocols and setup, technical challenges, and radiologic guidelines for 7T MRI in patients with epilepsy. This article mainly addresses structural imaging; in addition, it presents multiple nonstructural MRI techniques that benefit from 7T and hold promise as future directions in epilepsy. Answering to the increased availability of 7T MRI as an approved tool for diagnostic purposes, this article aims to provide guidance on clinical 7T MRI epilepsy management by giving recommendations on referral, suitable 7T MRI protocols, and image interpretation.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Neurology (clinical)

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