Table
1: Cervical
cancer MRI parameters.
|
Sequence |
|||||||||
Axial T1 |
Sag T2 |
Axial T2 |
Axial T2 |
Axial DWI |
BOLD |
Sag T2 |
Axial T1 |
Axial T1 |
Axial T1 |
|
Fat saturated |
No |
Yes |
No |
Yes |
Yes |
Yes |
Yes |
Yes |
||
Time after contrast |
40 seconds |
90 seconds |
180 sec |
|||||||
Sequence |
FSE |
FRFSE |
FRFSE |
FRFSE |
Echoplanar |
FRFSE |
SPGR |
SPGR |
Fast Spin Echo |
|
# of dimensions |
2D |
2D |
2D |
2D |
2D |
2D |
2D |
3D |
3D |
2D |
TE (msec) |
9 |
90 |
86 |
90 |
81 |
6.8-56.2 ms (16 echoes, ∆TE = 2.3 ms) |
90 |
1.8 |
1.8 |
9 |
TR (msec) |
600 |
3400 |
3400 |
3800 |
12000 |
87 |
3800 |
3.8 |
3.8 |
600 |
Echo Train Length |
4 |
21 |
21 |
21 |
21 |
InvPrep TI = 20 |
InvPrep TI = 20 |
ETL 4 |
||
Flip angle (degrees) |
90 |
90 |
90 |
90 |
90 |
40 |
90 |
12 |
12 |
90 |
Number of excitations |
4 |
3 |
3 |
2 |
8 |
1 |
2 |
1 |
1 |
2 |
FOV (cm) |
26 |
26 |
26 |
34 |
32 |
32 |
32 |
28 |
28 |
32 |
Slice thickness/interval (mm) |
5/1.5 |
5/1.5 |
5/1.5 |
1-Jun |
4/0.5 |
4/0.5 |
5/1.5 |
4.6 |
4.6 |
6/1 |
Matrix size |
256 x 224 |
320 x 256 |
320 x 256 |
320 x 256 |
128 x 128 |
256 x 256 |
256 x 224 |
256 x 192 |
256 x 192 |
256 x 192 |
b Value (sec/mm2) |
0, 500 |
Note: Abbreviations: fast spin echo (FSE), fast recovery
fast spin echo (FRFSE), spoiled gradient echo (SPGR)