write_tacs
=================================================

.. py:function:: petpal.preproc.regional_tac_extraction.write_tacs(input_image_path: str, label_map_path: str, segmentation_image_path: str, out_tac_dir: str, out_tac_prefix: str = '', verbose: bool = False)

   Function to write Tissue Activity Curves for each region, given a segmentation,
   4D PET image, and label map. Computes the average of the PET image within each
   region. Writes a JSON for each region with region name, frame start time, and mean
   value within region.

   :param input_image_path: Path to the 4D PET image from which regional TACs will be
                            extracted.
   :type input_image_path: str
   :param label_map_path: Path to the dseg file linking regions to their mappings in the
                          segmentation image.
   :type label_map_path: str
   :param segmentation_image_path: Path to the segmentation image containing ROIs. Must be in
                                   the same space as input_image.
   :type segmentation_image_path: str
   :param out_tac_dir: Path to the directory where regional TACs will be written to.
   :type out_tac_dir: str
   :param out_tac_prefix: Prefix for output TAC files. Typically the participant ID.
   :type out_tac_prefix: str
   :param verbose: Set to True to print processing info. Default False.
   :type verbose: bool