<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Skip Navigation
We experienced a service interruption from 9:00 AM to 10:00 AM. PT. We apologize for any inconvenience this may have caused. (Posted: Tuesday 02/21/2017)

PET Scans

A technique that is especially useful in studying the processes in the brain.

Atoms Practice
This indicates how strong in your memory this concept is
Practice Now
Turn In
How do we create a 3D image of our bodies?

How do we create a 3D image of our bodies?

License: CC BY-NC 3.0


Movies, and specifically sci-fi films, have thrived off making futuristic devices to impress and us and usher us into a world of innovation.  What we don’t know, however, is that simpler prototypes of these devices exist in our world today.  Fascinated by those floating holograms?  Impressive scanning devices?  Well, positron emission tomography (PET) creates just that.  By using nuclear imaging, it is able to create a three dimensional projection of the human body.  The doctors put positron-emitting radionuclide tracers on biologically active molecules like fluorodeoxyglucose (FDG), and the tracers allow the machines to detect gamma rays.  Meanwhile there is a x-ray computed tomography (CT) scan going on at the same time to help create the 3D image.  

Creative Applications

  1. Why is it important that we put the positron-emitting radionuclide on a biologically active molecule? 
  2. Why are PET scans usually paired with CT scans?
  3. What would be different if you paired a PET scan with a MRI scan instead?




    Notes/Highlights Having trouble? Report an issue.

    Color Highlighted Text Notes
    Please to create your own Highlights / Notes
    Show More

    Image Attributions

    1. [1]^ License: CC BY-NC 3.0

    Explore More

    Sign in to explore more, including practice questions and solutions for PET Scans.
    Please wait...
    Please wait...
    Add Note
    Please to create your own Highlights / Notes