11. Basics of CT and MRI and 12. Cross Sect CBCT Flashcards
1
Q
What is a voxel?
A
A volume element
- A pixel with a 3rd size
- Referred to as “non-isotropic” in CT imaging
2
Q
Housfield Units are also known as and represent what?
A
CT numbers
- Represent tissue density
3
Q
The reference of a structure to be of “high density” refers to what type of structure?
A
A structure that would be “high density” of housfield units would refer to hard tissue such as bone
(low density - soft tissue or empty space)
