quiz 6 Flashcards
One 90 degree Excitation Pulse and one 180 degree refocusing pulse describes what pulse sequence?
spin echo
What is the TI of CSF in a T2 weighted image?
1700-2200ms
This modified TSE/FSE parameter pushes any transverse magnetization into the longitudinal plane, making it available for the beginning of the next TR period.
DRIVE
This type of imaging assigns lines of K-space to a coil that is coupled to other coils allowing for faster imaging
parallel imaging
This type of K-space fills linearly but starts at the center lines first.
Centric K space filling
Select two of the modifications to Spiral K space
eliptical k space
propellar k space
This type of K space filling will fill the outer lines first and then fill the central lines after contrast injection
key hole
The type of K space filling is the opposite of Keyhole imaging in respect to filling K space. They type fills the central lines first then the outer lines last.
centric
What pulse sequence would be best to show pathology that may be next to CSF?
FLAIR
When gradients are used to dephase and rephase the residual magnetization this is called?
gradient spoiling
RF is transmitted at a certain frequency to exite a slice at a specific phase.
RF spoiling
In order to scan faster it is typically required to fill K space in a different manner compared to normal acquisitions.
True/False
true
NEX
GE
NSA
Phillips
AC
Siemens
