The Status Section shows the image size, i.e. the number of voxels in X-, Y-, and Z-direction as well as the voxel length.

The Dataset pull-down menu contains the current processed image and the last step. Selecting it from the pull-down menu loads the corresponding image in the Image Processing dialog.

Additionally, it can contain different image datasets loaded in the Image Processing dialog, while having Keep existing Volume Fields selected in the Import Geometry dialog. You can easily switch between several images, that are loaded simultaneously.