radiomics module for ultrasound

Operating system:mac0s
Slicer version: 5.0.3
Expected behavior:
Actual behavior: I am having difficulty in obtaining radiomic values from regions of interest drawn on .dcm ultrasound images. In particular, when I select the different features on the radiomics panel, the apply button does not become activated. it doesn’t happen all the time and occasionally i can get radiomic results from the same scan. Can some one provide guidance or insight on how to fix this issue?