|
PulseSeq
|
TR
|
TE
|
Flip
|
BW
|
Matrix
|
Slice
|
SAT
|
NEX
|
FOV
|
Other
|
|
Cor
SSFSE
|
na
|
180
|
na
|
31
|
256x160
|
6
x 0
|
None
|
.5
|
40x40
|
|
|
Ax
SSFSE
|
na
|
180
|
na
|
31
|
256x160
|
6
x 0
|
None
|
.5
|
32x24
|
|
|
*Sag
FSPGR
|
min
|
min
|
90°
|
16
|
256x128
|
20
|
None
|
1
|
32x32
|
For
Timing Bolus
|
|
Cor
efgre3D
|
min
|
min
|
40°
|
62
|
256x160
|
2.6
x 0
|
None
|
1
|
30x30
|
Non-breathhold;
Burst 60; Pre/post x2; SliceZip
|
|
Ax
FMPSPGR
|
20
|
min
|
30°
|
31
|
256x160
|
5
x 0
|
None
|
1
|
24x24
|
Breathhold
|
|
Sag
FMPSPGR
|
20
|
min
|
40°
|
31
|
256x160
|
5
x 0
|
None
|
1
|
32x24
|
Cover
Aorta only; 1 Breathhold
|
*Time to peak enhancement of distal aorta. 60 slices at
same location.
Artifact is minimized by using the shortest possible
TE, highest bandwidth and avoiding fat suppression whenever possible. By increasing
NEX from 0.5 to 1.0, the TE for efgre3D is decreased because less of the echo
is sampled. The technique least sensitive to metal is SSFSE, because the 180
degree refocusing pulses are so close together.