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Welcome to the CMRR MB-EPI C2P sequence wiki!

The intent of this section is to provide additional documentation and supporting tools for "advanced" users.

• Sample MATLAB code for reading the new physiology log files

• Some advanced sequence options can be unlocked by creating and editing a file named MBAdvancedSettings.ini in the customer sequence directory. This file uses the basic Windows ini-file syntax.

  Use these options at your own risk!

  • User-specified slice-GRAPPA kernel size

        [MultiBand]
        ManualGRAPPAKernelSize = 1
    

    Note: By default, the slice-GRAPPA kernel size is determined automatically. Enabling this ini-file option will unlock an option in the protocol UI for specifying the slice-GRAPPA kernel size on a per-protocol basis. Please refer to the UI tooltip for further details.

  • User-specified FoV shift factor (blipped-CAIPI, CAIPIRINHA)

      [MultiBand]
      ManualBlipFactorSL = 1
    

    Note: By default, the FoV shift factor is determined automatically. Enabling this ini-file option will unlock an option in the protocol UI for specifying the FoV shift factor on a per-protocol basis. Please refer to the UI tooltip for further details.

  • Slice multiplier factor (workaround for 128-slice limit of UI)

      [MultiBand]
      SliceMultiplier = 1
    

    Note: This option will automatically increase the number of acquired slices by the specified factor, otherwise keeping the slice FoV, TR, etc. constant. For example, to acquire 180 1mm slices, prescribe 90 2mm slices and set this parameter to 2. If the Mosaic matrix size limit is exceeded (4096x4096 on UHF; 2048x2048 otherwise), reconstruction will crash. This option is only supported for VB17A/UHF.