PET Flashcards
1
Q
F 18
A
T1/2: 110 minutes
2
Q
C 11
A
T1/2: 20.3 minutes
3
Q
N 13
A
T1/2: 9.97 minutes
4
Q
O 15
A
T1/2: 122 seconds
5
Q
Ga 68
A
T1/2: 68 minutes
6
Q
Ge 68
A
T1/2: 271 days
Electron capture
Parent
7
Q
Rb 82
A
T1/2: 76.4 days
8
Q
Sr 82
A
T1/2: 25.55 days
Electron capture
Parent
9
Q
What type of radiation does PET use?
A
Annihilation radiation
10
Q
Annihilation radiation events are a by-product of what interaction?
A
Pair production
11
Q
What is annihilation reaction?
A
- Initiated by decay of a nucleus of an unstable isotope having too many protons. 2. Protons are turned into a neutron and a positron and emits a neutrino. 3. The positron will interact with an electron and annihilate each other emitting the energy as 511 keV photons in each direction
12
Q
Most important isotope for PET
A
Fluorine 18
Positron emitter
