![](https://webarchive.library.unt.edu/eot2008/20090117042725im_/http://www.cancer.gov/images/spacer.gif) |
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![](https://webarchive.library.unt.edu/eot2008/20090117042725im_/http://www.cancer.gov/images/spacer.gif)
| A noninvasive tool used to observe functioning in the brain or other organs by detecting changes in chemical composition, blood flow, or both. |
Previous Definitions: | frontal sinus, fruit acid, Ftorafur, fulguration, fulvestrant | Next Definitions: | functioning tumor, fundus, fungating lesion, fungus, fusion gene |
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![](https://webarchive.library.unt.edu/eot2008/20090117042725im_/http://www.cancer.gov/images/spacer.gif) |