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