Imaging Flashcards
1
Q
What is intensity value?
A
Diff shades of black and grey
2
Q
What file format is commonly used in imaging?
A
Dicom
3
Q
Formula for X-ray thickness
A
I=i0e-2x
4
Q
What range are rays measured in?
A
30 to 100 kev
5
Q
What can X-rays detect mediums
A
Air fat soft tissue bone metal
6
Q
List the types of radiation
A
Alpha Beta Positron Gamma X-rays
7
Q
What is the half life equation?
A
Ln2/y
8
Q
What is a gamma emitter and what’s it used for?
A
Used for thyroid treatment emits g rays, pet positron emission, rotated gamma machine
9
Q
How does mri work?
A
1- sample put in magnetic field
2-radiated with radio waves at resonance frequency
3-sample reimts radio waves
4-image formed and read
