physics basics Flashcards
1
Q
how do photons interact
A
- photoelectric effect
- compton effect
- pair production
2
Q
how do electrons interact
A
bremmstrahlung
ionisation of absorber atoms
heating
individual electrons annhilation
3
Q
what uses ionizing radiation
A
CT
XRAY
PET
gamma camera
4
Q
what produces images with multiple slices
A
CT
MRI
5
Q
what is commonly found in RT department
A
CT
6
Q
what has charge
A
electrons
protons
positrons
7
Q
what has rest mass
A
electrons
protons
neutrons
positrons
8
Q
what is intentionally produced in linac
A
xrays
electrons
photons
9
Q
what is unintentionally produced in linac
A
positrons
nuetrons
10
Q
which are fundamental particles
A
electron
positrons
11
Q
equivalent dose is measured in
A
Sv
12
Q
electrons size
A
2000 x smaller than pro
13
Q
how to measure electrons
A
1/2mv^2
14
Q
outside the clinic , what do photons mean
A
xray
gamma ray
visible light
15
Q
what are photons
A
EM waves
