How long does it take for a patient to get results from a pet scan?

It depends on what is being scanned and how fast the machine is. Machines are like computers (technologywise) a computer from 1995 could still get the work done, but one that is brand new could get it done a lot faster. That being said it also depends on the type of exam. If there is a biopsy involved it could take a few hours. But for a regular run of the mill scan you would be on and off the table in about 10 minutes. (ask for a blanket its really cold in those rooms)