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FramewiseDisplacement brick

Calculate the FD (framewise displacement) as in [Power2012]

This implementation reproduces the calculation in fsl_motion_outliers.

Adapted from nipype Cofunds


Mandatory inputs parameters:

  • in_file (a string representing an existing file)

    Motion parameters file.

    ex. '/home/username/data/derived_data/reg_func_valid_oned.txt'
    

Optional inputs with default value parameters:

  • normalize (a boolean, optional, default value is False)

    Calculate FD in mm/s.

    ex. False
    
  • out_prefix (a string, optional, default value is ‘fd’)

    Specify the string to be prepended to the filename of the output file.

    ex. 'fd_'
    
  • parameter_source (a string which is FSL or AFNI or SPM or FSFAST or NIPY’, optional, default value is FSL)

    Source of movement parameters.

    ex. FSL
    
  • radius (a float, optional, default value is 50.0)

    Radius in mm to calculate angular FDs.

    ex. 50.0
    

Outputs parameters:

  • out_file (a strings representing a file)

    Out file.

    ex. '/home/username/data/derived_data/fd_reg_func_valid_oned.out'
    

Useful links:

nipype Cofunds

mriqc IQMS