Image processing steps order when using the settings in the parameter file?

Hi!
After I have cropped images to their tumour masks, I am aiming to:

  • Resize all images to a specific image resolution
  • Normalize image intensities
  • Discretize images (Binning)

However, I do not know what is the correct order or, simply, what is the order that pyRadiomics applies when all these steps are implicitly “required” through specification of their settings in the parameter file.

Thank you in advance for your time!

The order forced in PyRadiomics is:

  1. Normalization (using Z-score)
  2. Resampling the spacing (resolution)
  3. Discretizing the gray values (only when calculating texture features and firstorder Uniformity and Entropy)
1 Like

Thank you for your reply @JoostJM; Why should one normalize before resampling? What is the rationale behind it? I would like to hear your opinion on this, as I am not sure which order should be best, I’ve read that resampling should be first. Thank you!