Inconsistency between 3D slicer DICOM images and images plotted on Python

Slicer version: 4.13.0
I’m performing semantic segmentation of Left Ventricle through 3D slicer and Google Colab.
I want to create my dataset of images and masks. In order to create my images dataset I loaded the .dcm files of each patient on colab. I expected an exact reproduction between the images on 3D slicer and the images plotted on python . I can’t understand why .
thank you in advance

Please provide screenshots and more details description about what kind of differences you see.