Functional imaging Flashcards
1
Q
how many coils are there in an MRI?
A
5:
- main coil
- RF coil
- 3 gradient coils (X, Y, Z)
2
Q
what happens to the brain at rest? (during resting state functional MRI)
A
minimal, slow activity
3
Q
what and where is the RF coil in an MRI?
A
radio-frequency coil around the patients head that receives the info via antenna
4
Q
what is the main magnet of an MRI machine?
A
tesla 1, 2, 3
5
Q
what do the X, Y, Z gradients allow for in an MRI machine?
A
allow to decode and image from the signals; encode spatial position
6
Q
what is CBF?
A
cerebral blood flow
