11. One test will involve the injection of a radioactive tracer isotope into Yeltsin's veins. 12. Similarly, PET scans use a radioactive tracer injected into the body to analyze brain tissue. 13. Maier-Leibnitz continued to work on nuclear spectroscopy and radioactive tracers in biochemistry and medicine. 14. In PET scanning, a radioactive tracer is injected into the subject before the scan is taken. 15. Radioactive tracers are used in medical and industrial applications, as well as biological and radiation chemistry.16. SPECT is similar to PET in its use of radioactive tracer material and detection of gamma rays. 17. PET measures chemical activity in the brain, using radioactive tracers created in the laboratory's own accelerator. 18. Chaikoff conducted trials on the use of radioactive isotopes as radioactive tracers to explore the mechanism of biochemical reactions. 19. Use of chemiluminescent technology allows researchers to replace radioactive tracers for greater personal safety and much less ecological impact. 20. But radioactive tracers find that a man with colon cancer also has cancer in the brain, making surgery useless.
