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Nuclear Engineering
Question about PET scans (Positron emission tomography)
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[QUOTE=".Scott, post: 6200431, member: 489053"] The radionucleotide used when mimicking glucose is Florine-18. Its decay products include Oxygen and a positron. So there is not much ionization due to the electron it absorbs - because going from Florine to Oxygen yields a "spare" electron. It is ionizing, and some free radicals can be created - but not exactly by the mechanism you describe. According to this article: [URL]http://www.radioactivity.eu.com/site/pages/Doses_Diagnostics.htm[/URL] That would be the same radiation damage you would expect to get in about 2 years from natural background radiation. Whether or not it is "safe" depends on what you are comparing it to. In most cases, someone getting a PET scan has more serious conditions to worry about than 7 mSv. [/QUOTE]
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Question about PET scans (Positron emission tomography)
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