Table 2: MR imaging
parameters for contrast-enhanced 3D sequences.
T2-prepared SSFP |
IR
SSFP |
|
Repetition time/echo
time (msec) |
4.7/2.4 |
4.5/2.1 |
90 |
90 |
|
Bandwidth (Hz/pixel) |
542 |
542 |
Field of view (mm) |
340
× 340 |
340
× 340 |
Voxel size (mm)* |
1.4
× 1.4 × 1.4 |
1.4 × 1.4 × 1.4 |
Acceleration factor
for SENSE |
4 |
4 |
Acquisition time (sec) |
240-255 |
230-248 |
Navigator
efficiency (%) |
52 ± 8 |
53 ± 9 |
Acquisition parameters relevant to image analysis were
identical for the T2-prepared SSFP and IR SSFP sequences. The inversion time
for the IR SSFP sequence was 260-280 msec. The acquisition window of the
navigator was 5 mm. Two consecutive phases were acquired at contrast-enhanced
MR angiography.
*Acquired
as over contiguous sections.