Topic Index

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

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Topic Index - n

• NEMA (National Electrical Manufacturers Association)
  • quality assurance Standards
• net magnetisation
  • formation of
• NEX (number of excitations) (≡ NSA)
  • increasing, SNR effect
• noise (acoustic), see acoustic noise
• noise spikes (k-space), see RF noise spikes
• noise (image), see SNR
• no phase wrap, see phase oversampling
• NRPB (National Radiological Protection Board, now HPA-RPD)
  • available safety guidelines
  • B₀ limits of exposure
• NSA (number of signal averages), see NEX
• nuclear spin, see spin
• nuclei
  • MRI signal from
• nylon bed-clothing
  • RF noise spikes

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