How to get images from the DICOM (.dcm) files. I'm using COBRE data that contains numerous .nii and .dcm (DICOM) files, and each DICOM file contains 30 scans of the brain. I want the PNG/JPG of each scan that is 30 images (in PNG/JPG) from a single DICOM file to use as an input for the CNN model. How to get it?