MEDIUM
AS and A Level
IMPORTANT
Earn 100

(c) In one type of PET scanner, the tracer isotope is Rb-82. Write an equation for the decay of this isotope. (Mass of proton =1.67×10-27 kg.)

Important Questions on Medical Imaging

MEDIUM
AS and A Level
IMPORTANT

(a) (i) With reference to PET scanning, explain the meaning of the term tracer.

HARD
AS and A Level
IMPORTANT
Explain what is meant by the term line of response and how it is used to identify the precise site of cancerous tissue.
HARD
AS and A Level
IMPORTANT
(b) (i) With reference to PET scanning, explain what is meant by an annihilation event?
HARD
AS and A Level
IMPORTANT
(b) (ii) Name the important quantities which are conserved in an annihilation event.