Use of Contrast-Enhanced MR Angiography (CE-MRA) for the Diagnosis of a Vascular Ring Anomaly in a Dog
Table 1
Magnetic resonance imaging parameters.
Pulse sequence
Slice thickness (mm)
Time of repetition (ms)
Time of echo (ms)
Number of averages
Time of inversion (ms)
Flip angle
Transverse TrueFISP
5
6.8
3.4
2
70
Dorsal TrueFISP
3
8.72
4.36
2
70
Sagittal TrueFISP
3
8.72
4.36
2
70
Transverse FLASH 2D
4
433
7.49
1
70
Transverse T2 STIR
5
7070
106
1
145
150
Immediate postcontrast sagittal FLASH 3D (CE-MRA)
1
5.25
2.29
1
30
Delayed postcontrast dorsal FLASH 3D (CE-MRA)
1.5
6.41
3.38
1
10
TrueFISP: true fast imaging with steady-state precession; FLASH: fast low angle shot; STIR: short tau inversion recovery; CE-MRA: contrast enhanced-magnetic resonance angiography.
