get_half_life_from_radionuclide

petpal.utils.image_io.get_half_life_from_radionuclide(meta_data_file_path: str) → float

Extracts the radionuclide half-life in seconds from a nifti metadata file. This function grabs the tracer radionuclide from the metadata and assumes a fixed half-life based on this. Code borrowed from: bilgelm/dynamicpet.

Parameters:

meta_data_file_path (str) – Path to the nifti metadata file.

Returns:

float – The radionuclide half-life extracted from the tracer radionuclide.

Raises:

• FileNotFoundError – If the metadata file does not exist at the provided path.

• KeyError – If the ‘TracerRadionuclide’ key is not found in the metadata file.