Lecture 5 Flashcards
1
Q
What are the safety concerns of ionising energy sources?
A
Harmful to living tissue
Breaks chemical bonds
2
Q
What is ALARA?
A
As low as reasonably achievable To reduce harmful effects: No pregnant women or children Fewer procedures Prolonged intervals between exposure
3
Q
What is spatial resolution?
A
Definition of fine structures
4
Q
What is contrast resolution?
A
Discriminating between different tissue density
5
Q
What is specific use of medical imaging dependent on?
A
Region of body to be examined.
Age/gender
Suspected disease
Appropriate test - consult with radiologist
6
Q
What are the safety concerns on non ionising energy sources?
A
Can heat tissue
Can affect developing cells
Interaction with DNA?
