PET scan Flashcards
1
Q
created in
A
the late 1970s
2
Q
how does it work
A
injection of a tracer which contains glucose to stimulate the brain and encourage activity
radioactive atoms start to break down, emitting positrons which give signals in the form of gamma rays
3
Q
activity shown
A
high levels = warm colours (red)
low levels=cooler colours (blue)
4
Q
looks at…
A
brain activity
look whether both sides of the brain are being used equally
can study mental illnesses such as depression
5
Q
measures
A
glucose metabolism
6
Q
tracers need to..
A
decay before brain activity can be shown
7
Q
costs approx
A
£1500
8
Q
spatial resolution
A
4-5mm
