A supply of fluorodeoxyglucose (FDG) arrives at a positron emission tomography clinic at 8 am. At 4 pm, when you arrive
Posted: Mon May 16, 2022 7:33 pm
A supply of fluorodeoxyglucose (FDG) arrives at a positron emission tomography clinic at 8 am. At 4 pm, when you arrive at the clinic to get a PET scan, the activity level of the FDG has dropped significantly because of the 110 minute half-life of the radioactive fluorine. Considering equal masses of FDG at 8 am and 4 pm, by what factor has the activity level been reduced by 4 pm? Note that another way to ask the same question is to say that we're looking for the ratio of the initial activity to the activity at 4 pm. The level has been reduced by a factor of