def find_mprage_ce(header: dict) -> str:
    """
    Finds correct value for the "ce" field of BIDS specification for MPRAGE
    sequences.

    Parameters
    ----------
    header : dict
        Dictionary containing DICOM's header

    Returns
    -------
    str
        Either "corrected" or "uncorrected" in terms of bias field correction
    """
    image_type = header.get("ImageType", "")
    return "corrected" if "NORM" in image_type else "uncorrected"