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Subkey                 Description                                                                                                                                                                                                                                                   
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CheckSpacing           Determine whether to check the spacing or not. If True, and the spacing of the image is [1x1x1], we assume the spacing is incorrect, and overwrite it using the DICOM metadata.                                                                               
Clipping               Determine whether to use intensity clipping in preprocessing of image or not.                                                                                                                                                                                 
Clipping_Range         Lower- and upperbound of intensities to be used in clipping.                                                                                                                                                                                                  
Normalize              Determine whether to use normalization in preprocessing of image or not.                                                                                                                                                                                      
Normalize_ROI          If a mask is supplied and this is set to True, normalize image based on supplied ROI. Otherwise, the full image is used for normalization using the SimpleITK Normalize function. Lastly, setting this to False will result in no normalization being applied.
Method                 Method used for normalization if ROI is supplied. Currently, z-scoring or using the minimum and median of the ROI can be used.                                                                                                                                
ROIDetermine           Choose whether a ROI for normalization is provided, or Otsu thresholding is used to determine one.                                                                                                                                                            
ROIdilate              Determine whether the ROI has to be dilated with a disc element or not.                                                                                                                                                                                       
ROIdilateradius        Radius of disc element to be used in ROI dilation.                                                                                                                                                                                                            
Resampling             Determine whether the image and mask will be resampled or not.                                                                                                                                                                                                
Resampling_spacing     Spacing to resample image and mask to, if resampling is used.                                                                                                                                                                                                 
BiasCorrection         Determine whether N4 Bias correction will be applied or not.                                                                                                                                                                                                  
BiasCorrection_Mask    Whether withing bias correction, a mask generated through Otsu thresholding is used or not.                                                                                                                                                                   
CheckOrientation       Determine whether to check the image orientation or not. If checked, if the orientation is not equal to the OrientationPrimaryAxis, the image is rotated.                                                                                                     
OrientationPrimaryAxis If CheckOrientation is True, if primary axis is not this one, rotate image such that it is. Currently, only "axial" is supported.                                                                                                                             
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