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Ultrahigh field MRI

Dr Daniel J Bell et al.

Ultrahigh field (UHF) magnetic resonance imaging refers to imaging done on any MRI scanner with a main magnetic field (B0) strength of 7 tesla or greater. Until recently purely a research tool, following the introduction of the first 7 T clinical scanner in 2017, there are now a slowly increasing number of academic centers worldwide with ultrahigh field scanners in clinical use. Several research scanners with even higher field strength than 7 T are in operation 1.

Advantages

Disadvantages

  • increase in side effects: dizziness, nausea, metallic dysgeusia, vertigo 1,2
  • increased magnetic susceptibility
    • image degradation artifacts
  • increased specific absorption rate (SAR)
    •  smaller flip angles, longer TRs, prolonged breath holds, decreased slices
  • increased T1 relaxation time
    • prolonged acquisition time
  • decreased T2/T2* relaxation time
  • increased data may become computationally heavy
Imaging technology

Article information

rID: 69050
Synonyms or Alternate Spellings:
  • 7.0 tesla MR
  • 7.0 T MR
  • Seven tesla MR
  • 7T MR
  • 7 T MR
  • Eight tesla MRI
  • 8 T MRI
  • Seven tesla MRI
  • Nine tesla MRI
  • 9T MRI
  • 7T MRI
  • 7 tesla magnetic resonance imaging
  • 9.0 tesla
  • 9.0 T MRI
  • 9 T MRI
  • Very high field MRI
  • 7.0 T MRI
  • 7.0 tesla MRI
  • 7 T MRI
  • 7 tesla MRI
  • Ultra-high field (UHF) nuclear magnetic resonance
  • Ultra-high field (UHF) NMR
  • Ultrahigh field (UHF) MRI
  • Ultra high field (UHF) MRI
  • Ultra-high field (UHF) MRI
  • Ultra-high field (UHF) magnetic resonance imaging

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