title: 7 Tesla compatible in-bore display for functional magnetic resonance imaging.
abstract: METHODS
  A liquid crystal display was modified for use inside a 7 T MR magnet. SNR measurements were performed using different imaging sequences with the monitor absent, present, or activated. fMRI with a volunteer was conducted using a visual stimulus.
  
  
  CONCLUSIONS
  SNR was reduced by 3.7%/7.9% in echo planar/fast-spin echo images when the monitor was on which can be explained by the limited shielding of the coated front window (40 dB). In the fMRI experiments, activated regions in the visual cortex were clearly visible. The monitor provided excellent resolution at minor SNR reduction in EPI images, and is thus suitable for fMRI at ultra-high field.
authors.affiliation: Department of Radiology, Medical Physics, University Medical Centre Freiburg, Breisacher Str. 60a, 79106, Freiburg, Germany. jens.groebner@uniklinik-freiburg.de
authors.forename: Jens
authors.initials: J
authors.lastname: Groebner
authors.forename: Moritz Cornelius
authors.initials: MC
authors.lastname: Berger
authors.forename: Reiner
authors.initials: R
authors.lastname: Umathum
authors.forename: Michael
authors.initials: M
authors.lastname: Bock
authors.forename: Jaane
authors.initials: J
authors.lastname: Rauschenberg
mesh_terms: D016477:Artifacts; D001921:Brain / Q000502:physiology; D017352:Echo-Planar Imaging / Q000379:methods*; D004867:Equipment Design; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008029:Lighting; D050866:Liquid Crystals; D008279:Magnetic Resonance Imaging / Q000379:methods*; D019047:Phantoms, Imaging; D059629:Signal-To-Noise Ratio; D014793:Visual Cortex / Q000473:pathology