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Journal Article Ppublish 41 citations

PubMed: 37377363 DOI: 10.2214/AJR.23.29342

Use of a Commercial 7-T MRI Scanner for Clinical Brain Imaging: Indications, Protocols, Challenges, and Solutions-A Single-Center Experience.

AJR Am J Roentgenol 221(6):788-804

Authors: Can Özütemiz, Matthew White, Wendy Elvendahl, Yigitcan Eryaman, Małgorzata Marjańska, Gregory J Metzger, Rémi Patriat, Jeramy Kulesa, Noam Harel, Yoichi Watanabe, Andrea Grant, Guglielmo Genovese, Zuzan Cayci

Affiliations

  • Department of Radiology, University of Minnesota, 420 Delaware St SE, MMC 292, Minneapolis, MN 55455.
  • Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, MN.
  • Center for Clinical Imaging Research, Department of Radiology, University of Minnesota, Minneapolis, MN.
  • Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, MN. Center for Clinical Imaging Research, Department of Radiology, University of Minnesota, Minneapolis, MN.
  • Department of Radiation Oncology, University of Minnesota, Minneapolis, MN.

Abstract

The first commercially available 7-T MRI scanner (Magnetom Terra) was approved by the FDA in 2017 for clinical imaging of the brain and knee. After initial protocol development and sequence optimization efforts in volunteers, the 7-T system, in combination with an FDA-approved 1-channel transmit/32-channel receive array head coil, can now be routinely used for clinical brain MRI examinations. The ultrahigh field strength of 7-T MRI has the advantages of improved spatial resolution, increased SNR, and increased CNR but also introduces an array of new technical challenges. The purpose of this article is to describe an institutional experience with the use of the commercially available 7-T MRI scanner for routine clinical brain imaging. Specific clinical indications for which 7-T MRI may be useful for brain imaging include brain tumor evaluation with possible perfusion imaging and/or spectroscopy, radiotherapy planning; evaluation of multiple sclerosis and other demyelinating diseases, evaluation of Parkinson disease and guidance of deep brain stimulator placement, high-detail intracranial MRA and vessel wall imaging, evaluation of pituitary pathology, and evaluation of epilepsy. Detailed protocols, including sequence parameters, for these various indications are presented, and implementation challenges (including artifacts, safety, and side effects) and potential solutions are explored.

MeSH

Parkinson Disease, Brain, Solutions

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