Can I use Slicer Heart without 3D Slicer?

Hello, I need to open 3D kretz volumes of ultrasound with python, but I require apply specific processing to this images out the environment of 3D slicer. There are someway to open this files with Slicer Hearth only?

In Slicer you can save into all commonly used 3D file formats. The default format it is standard NRRD.

What processing you need to do, using what libraries/tools, in what environment?