Distorted Images from DICOM File

Thank you for the information. My knowledge of using 3D Slicer is limited as I am learning information, and I appreciate your time and assistance. If using data with isotropic spacing for better resolution images is the better way to analyze 3D volumes, are there methods for obtaining this type of data without understanding computer programming?

Would anyone be able to explain or provide a source that explains how to complete the crop volume module method that was mentioned?

Thank you,
Jacob