Researchers have developed a new imaging technique that lights up cancer’s sleeper cells, warning patients and doctors of a potential relapse according to a study published in Cancer Research today.  Cancer cells can enter a sleeping state when they stop growing and instead store energy for future use – much more so than most normal healthy cells. But by using a radioactive molecule which mimics what our body uses to create energy, the researchers could measure the build up of these energy stores, known as glycogen, using positron emission tomography (PET scan). {read more here}