Unit 4 Quiz Flashcards
1
Q
What is the primary advantage of Gradient Echo sequences over Spin Echo sequences?
A
Shorter scan times
2
Q
What kind of flip angles are in Gradient Echo pulse sequences?
A
Variable
3
Q
Gradients can be used to dephase & rephase the residual magnetization. __________________ is the opposite of rewinding.
A
Gradient spoiling
4
Q
This gradient echo was initially developed for imaging of the heart & great vessels but is now used for spinal imaging.
A
Balanced
5
Q
In Gradient Echo sequences, what is the role of the dephasing gradient?
A
Accelerate signal decay
6
Q
What is the primary limitation of Gradient Echo sequences in terms of susceptibility artifacts?
A
They are highly susceptible
