Positron Emission Tomography (PET) Flashcards
1
Q
Positron Emission Tomography (PET)
A
Radioactive substance (tracer) is injected into the bloodstream. This is distributed in the brain according to physiological needs and with detectors measured
2
Q
Disadvantage
A
Scary to subject
Very expensive, needs trained professionals
Very slow (low temp reso)
3
Q
Blocked design
A
Trials in a condition are presented in a block. Brain activity in one block is compares to that of another.
In PET tracer needs to decay so 10 min intervals between blocks
