code: def get_n_mosaic(csa_dict):
      return get_scalar(csa_dict, "NumberOfImagesInMosaic")
  
file_path: nibabel/nibabel/nicom/csareader.py
imports: import numpy
  from .structreader import Unpacker
  from .utils import find_private_section
label_desc: Use image node_id 6 for calling a global function with example usage: get_n_mosaic(csa_dict) and returns: get_scalar