Week 4 - Biological effects of radiation Flashcards

1
Q

The basic principle for all ionizing radiation requests is:

A

Justification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

Code of conduct for registered health practioners

A

Consider the balance of benefit and harm in all clinical management decisions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Severity of effect from radiation depends directly on:

A
  • Dose and dose rate
  • Region of body exposed
  • age and health of individual
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Dose quantities

A
  • Absorbed does - energy deposited in a kg of a substance by the radiation
  • equivalent dose - absorbed dose weighted for harmful effects of different radiations
  • effective dose - equivalent dose weighted for susceptibility to harm of different tissues
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Dose limits

A

occupational exposure = 50mSv
Public expsire = 1mSv

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Tissue categories

A

Radio sensitive
Radio-resistant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Radiosensitive

A

stem cells
younger tissues and organs
high metabolic activity
high growth rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Radio-resistant

A

mature cells
older tissues and organs
low metabolic activity
low growth rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

If DNA is damaged from radiation, what can occur:

A
  • the damage will be repaired prior to the end of the cell’s growth cycle
    -the cell will die prior to division
  • the cell repairs itself imperfectly and replicates this imperfect structure
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Are diagnostic xrays partial body or whole-body exposure

A

partial-body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly