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A typical day

You start at 6:30am because the first tracer delivery arrives early and it is already decaying. You measure a dose, check it against the patient's weight and the order, and inject it. Then you wait, sometimes an hour, while the tracer goes where it is meant to go. Scans run through the morning: a bone study, a cardiac stress test, a positron emission tomography scan for a cancer follow-up. Between them you calibrate equipment, log doses and talk to people who are nervous. You are home by late afternoon.