Signal to Noise Ratio

Parameters that increase signal to noise ratio (while keeping all other parameters constant) include:

  • Increased magnetic field strength
  • Use of surface coil
  • Increased slice thickness
  • Increased field-of-view
  • Decreased matrix
  • Increased TR
  • Decreased TE
  • Increased acquisitions
  • Decreased bandwidth

Parameters that increase spatial resolution (while keeping all other parameters constant) include:

  • Increased matrix
  • Decreased slice thickness
  • Decreased field of view

>MRI imaging is a balance between spatial resolution and signal to noise ratio, with acquisition time limiting both.

 

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