get_half_life_from_meta
=============================================

.. py:function:: petpal.utils.image_io.get_half_life_from_meta(meta_data_file_path: str)

   Extracts the radionuclide half-life (usually in seconds) from a nifti metadata file.

   :param meta_data_file_path: Path to the nifti metadata file.
   :type meta_data_file_path: str

   :returns: *float* -- The radionuclide half-life extracted from the metadata file.

   :raises FileNotFoundError: If the metadata file does not exist at the provided path.
   :raises KeyError: If the 'RadionuclideHalfLife' key is not found in the metadata file.