Full body scans are becoming more popular even for People who have no symptoms. At any given time, a persons risk of having lung cancer is approximately 1 in 1000. If a full body scan can detect lung cancer 95% of the time (I.e. gives a positive result when a person has lung cancer) but returns a positive result 1% of the time if a person does not have lung cancer what is the probability that a person who gets a positive result does not have lung cancer?