Technetium -99m

  • 0 votes

When a patient takes this medical traser.. why do they need to avoid contact with children, bbaies or generally other people ?

What does the gamma radiation do after the person has the scan? Is it still present in the persons body ?

Help please

Posted Sat 1st December, 2012 @ 19:57 by ? Secret - Team GR

5 Answers

  • 1 vote

Basically what happens is, the gamma radiation can pass easily out of the body. This means it can easily pass into other people's bobies. Children and babies are still developing and growing quickly. This means that their cells are dividing a lot. If they are exposed to gama radiation in low levels (low levels would be emitted by the person with the traser) then their DNA may be mutated causing cancer. This can happen to anyone, but since chidren's cells are dividing more, they are more at risk. 

The gama radiation mostly passes out of the body after the scan - some may remain, but after a while it will completely pass out. since the gama radiation has a short wavelength - it can pass out of the body easily.

Answered Sat 1st December, 2012 @ 20:26 by Former Member
  • 0 votes

woah ! uve just made it 10 times simpler to understand.. thanks..XD

Answered Sat 1st December, 2012 @ 21:29 by ? Secret - Team GR
  • 0 votes

That's ok.

Answered Sat 1st December, 2012 @ 21:35 by Former Member
  • 0 votes

the reason it can cause cancer if a baby/ other person is exposed, is becasuse the chemical has a short half life so it decays quickly (refering to the tracer), so releases radiation such as gamma,  high exposer to gamma breaks the DNA of cells and if they can't replace it in time, then it mutates, copying the incorrect DNA and may grown uncontrollably (which is what cancer is), also to treat cancer, radio therapy (use of gamma) destroys the cancers DNA, but it can also re cause it as it could also damage the healthy cells if too concentrated in an area, this is a risk to treatink cancer with radio therapy.

Answered Sat 1st December, 2012 @ 22:16 by Eamon Walker
  • 0 votes

thnx  Eamon Walker .. sorry for the late reply..

Answered Mon 3rd December, 2012 @ 20:03 by ? Secret - Team GR