Topic Index

Study MRI physics using interactive questions and answers. Choose a topic.

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Topic Index - m

• matrix
  • quoting acquisition vs. reconstruction
• MDA (Medical Devices Agency) see MHRA
• magnet
  • main types, pros / cons
• MagNET
  • blue cover reports
• magnetic field, static (B₀)
  • limits of exposure 1, 2, 3
  • strength and T1
  • Helmholtz pair creates
  • initial effect of
• magnetic field, oscillating at radiofrequency (RF), (B₁)
  • don't think "radio waves"
• magnetic field, gradient
  • Maxwell pairs
  • Golay coils
• magnetisation, net
  • formation of
• magnetophosphenes
  • nature and origin
• main magnetic field, see magnetic field, static
• Maxwell pair
  • creates z gradient
• measurements
  • large number of MRI signal measurements required for an image
• MHRA (Medicines and Healthcare products Regulatory Agency)
  • available safety guidelines
• misregistration, see spatial misregistration
• mixer, see quadrature demodulator
• modulation transfer function
  • used for resolution assessment
  • explained
  • measurement of
• modulator, see RF modulator
• motion artefact
  • in phase encoding direction
  • vs. truncation artefact
  • reduction using respiratory compensation
  • random, simulated
  • periodic, simulated
  • direction of motion and
  • timing and k-space
• MR compatible
  • definition of
• MR environment
  • controlled area
• MR safe
  • definition of

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