title: rescale intercept and slope from the metadata for Nifti files
body: <p>Does ITK/SimpleITK automatically cater for the HU by using rescale intercept and slope from the metadata for Nifti files, as it does for dicom files (<a href="https://blog.kitware.com/dicom-rescale-intercept-rescale-slope-and-itk/" rel="nofollow noreferrer">source</a>)?  If it doesn't how can I read the metadata in python 3.4? I went through <a href="https://itk.org/Doxygen/html/classitk_1_1NiftiImageIO.html" rel="nofollow noreferrer">this</a> class however I can't seem to access the ReadImageInformation() function. </p>