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Using radioactive drugs to see inside your body - Pedro Brugarolas

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Is there a way to detect diseases like cancer and Alzheimer’s before they advance too far? Doctors are using injected radioactive drugs that circulate through the body and act as a beacon for PET scanners. These diagnostic tools can detect the spread of diseases before they can be spotted with other types of imaging. So how exactly does this work, and is it safe? Pedro Brugarolas investigates.

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Meet The Creators

  • Educator Pedro Brugarolas
  • Director Jovan Rakić, Goran Rakic
  • Narrator Addison Anderson
  • Producer Milica Lapcevic
  • Animator Jovan Rakić, Goran Rakic
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by TED-Ed

What do you think are the main challenges in PET imaging?

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Avatar for Jazmin Mccurley
Lesson in progress

I think there is a chance that it might be dangerous since it is injected into the vein and there is a possibility that something could go wrong.


Avatar for Jean-michel Geets
Lesson in progress

Having access to stable supply of sufficient isotope for patient injection since it usually decays fast.


Avatar for Khaled Rouhoma
Lesson in progress

The side effects of radiation and the limits of some tracers


Avatar for Kwasi Bodkin
Lesson in progress

great idea