extract_roi_voxels      Extract the voxels of 'OsiriX' ROIs from a PET
                        DICOM series
match_roi_voxels        Find the voxels of one ROI on one PET slice
plot_roi_slices         Plot PET slices with the ROI voxels
pyradiomics_features    Radiomics features of the ROI voxels with
                        'PyRadiomics'
read_osirix_rois        Read regions of interest exported from 'OsiriX'
read_pet_slice          Read one PET slice in SUV
suv_factor_from_header
                        SUV factor from a PET DICOM header
