How to convert multivolume(dicom)image(DCE)to nifti

Operating system:windows 10
Slicer version: 4.10.0
Expected behavior:I have a batch of MR DCE sequence images and corresponding RTst files,all in dicom format,but I want to convert them into nit format image and labelmap so that I can use pyradiomics to extract features.
Actual behavior:3D slicer can not convert my DCE dicom files to nii with Segmentation module,but can convert T1 or DWI image in dicom format to nii,it’s strange.