Aurora's success attracted attention, money and imitation.
Daniel became a public figure almost by accident.
He disliked most of it.
He liked one thing: people began talking about nuclear medicine as more than a frightening word involving radiation.
He used interviews to explain targeted therapy, imaging, safety and uncertainty in plain language.
"Radioactive is not a diagnosis," he said on television. "Dose, isotope, route and purpose matter. A smoke detector and a house fire both involve smoke. That does not make them the same event."