With their new imaging system, scientists at GE might have found a fix. Before surgery, doctors using GE's system would inject into the patient's vein a fluorescent dye solution that seeks out dangerous cells surrounding the tumor. Surgeons would illuminate the tagged cells with infrared light, creating a glowing halo. A real-time image of the tagged cells is then overlaid on a video of the patient's anatomy. Kathleen Bove of GE's biomedical imaging lab says that in tests on rats, the imaging system helped scientists remove peripheral cancer cells, lessening the need for follow-up surgeries.