Soft Tissue Neck 3T
Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols
Instructions And Patient Preparation
- Instructions
- • Flow Compensation is an option for all sequences
• Use pre- and postcontrast T1 when using Flow Compensation
• If contrast is used, lesions and cancer staging slices may vary based on indication
• Coronal coverage – top of orbits thru manubrium
• Axial coverage – tailored to area of interest (nasopharynx/oropharynx/parotids) cover lesions or area of interest - Position
- Supine, head first
- Coil
- Head/Neck coil
- Landmark
- Chin
Contrast Agent Parameters
| Contrast Agent | Dose | Injection Rate | ||||||
|---|---|---|---|---|---|---|---|---|
| Gadopiclenol (VUEWAY) | 0.05 mmol/kg | Hand Bolus | ||||||
| Saline Flush | 10 mL | Hand Bolus | ||||||
| Comments | • No Fat Sat on precontrast • Use Fast DIXON with Strong Fat Sat. Use Interpolation • Report agent administered and dose • Use minimal dose for patients with a GFR <60 mL/sec |
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Imaging Parameters
| Scan Description | SAGITTAL T1 |
Pre AXIAL T1 |
AXIAL T2 DIXON |
AXIAL DWI |
CORONAL T2 |
Post AXIAL VIBE DIXON |
Post CORONAL VIBE DIXON |
Post SAGITTAL VIBE DIXON |
|---|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | |
| Sequence Name | tse_rr | tse | tse_rs | resolve | tse_rr | fl | fl | fl |
| Dimension | 2D | 2D | ― | 2D | 2D | 3D | 3D | 3D |
| Acceleration Mode | GRAPPA | GRAPPA | GRAPPA | SMS | GRAPPA | GRAPPA | GRAPPA | GRAPPA |
| Acceleration Factor PE | 4 | 4 | 3 | 2 | 4 | 2 | 2 | 2 |
| Acceleration Factor 3D | ― | ― | ― | ― | ― | 1 | 1 | 1 |
Acquisition Parameters
| Scan Description | SAGITTAL T1 |
Pre AXIAL T1 |
AXIAL T2 DIXON |
AXIAL DWI |
CORONAL T2 |
Post AXIAL VIBE DIXON |
Post CORONAL VIBE DIXON |
Post SAGITTAL VIBE DIXON |
|---|---|---|---|---|---|---|---|---|
| TR | 600.0 ms | 550.0 ms | 3500.0 ms | 4000.0 ms | 3200.0 ms | 6.0 ms | 5.8 ms | 5.8 ms |
| TE | 8.40 ms | 9.30 ms | 83.00 ms | 1: 60 ms 2: 99 ms |
82.00 ms | 1: 2.46 ms 2: 3.69 ms |
1: 2.46 ms 2: 3.69 ms |
1: 2.46 ms 2: 3.69 ms |
| Flip Angle | 160 deg | 160 deg | 145 deg | 180 deg | 160 deg | 12 deg | 12 deg | 12 deg |
| Turbo Factor | 2 | 3 | 13 | ― | 16 | ― | ― | ― |
| Bandwidth | 330 Hz/Px | 302 Hz/Px | 558 Hz/Px | 679 Hz/Px | 260 Hz/Px | 720 Hz/Px | 800 Hz/Px | 780 Hz/Px |
| EPI Factor | ― | ― | ― | 80 | ― | ― | ― | ― |
| Fat Saturation | ― | ― | Strong | Strong | ― | ― | ― | ― |
| Fat-Water Contrast | Standard | Standard | Fast Dixon | Fat Saturation | Standard | Dixon | Dixon | Dixon |
| Gradient Mode | Fast | Fast | Fast | Fast | Fast | Fast* | Fast* | Fast* |
| RF Pulse Type | Normal | Normal | Fast | Normal | Normal | Fast | Fast | Fast |
| Asymmetric Echo | ― | ― | Off | ― | ― | Weak | Weak | Weak |
Scan Parameters
| Scan Description | SAGITTAL T1 |
Pre AXIAL T1 |
AXIAL T2 DIXON |
AXIAL DWI |
CORONAL T2 |
Post AXIAL VIBE DIXON |
Post CORONAL VIBE DIXON |
Post SAGITTAL VIBE DIXON |
|---|---|---|---|---|---|---|---|---|
| Base Resolution | 352 | 352 | 320 | 160 | 320 | 192 | 224 | 256 |
| Phase Resolution | 75% | 75% | 75% | 100% | 70% | 100% | 100% | 100% |
| Slice Resolution | ― | ― | ― | ― | ― | 100% | 100% | 100% |
| Averages | 1 | 1 | 2 | 2, 2 | 2 | 1 | 1 | 1 |
| Concatenations | 2 | 3 | 2 | 1 | 2 | 1 | 1 | 1 |
| b-value 1 | ― | ― | ― | 0 s/mm2 800 s/mm2 |
― | ― | ― | ― |
| FoV Read | 220 mm | 180 mm | 180 mm | 220 mm | 180 mm | 170 mm | 180 mm | 220 mm |
| FoV Phase | 100% | 100% | 100% | 100% | 122% | 100% | 123% | 100% |
| Phase Encoding Dir. | P >> A | A >> P | A >> P | A >> P | H >> F | A >> P | H >> F | A >> P |
| Phase Oversampling | 100% | 150% | 100% | 0% | 100% | 50% | 70% | 30% |
| Slice Oversampling | ― | ― | ― | ― | ― | 44% | 33% | 33% |
| Slice Partial Fourier | ― | ― | ― | ― | ― | Off | Off | Off |
| Phase Partial Fourier | Off | Off | Off | Off | Off | Off | Off | Off |
| Flow compensation | Read | None | Slice | ― | Read | ― | ― | ― |
Scanning Range
| Scan Description | SAGITTAL T1 |
Pre AXIAL T1 |
AXIAL T2 DIXON |
AXIAL DWI |
CORONAL T2 |
Post AXIAL VIBE DIXON |
Post CORONAL VIBE DIXON |
Post SAGITTAL VIBE DIXON |
|---|---|---|---|---|---|---|---|---|
| Elliptical Filter | Off | Off | Off | ― | Off | Off | Off | Off |
| Image Filter | Off | Off | Off | ― | Off | Off | Off | Off |
| Normalize | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan |
| Raw Filter | Off | Off | Off | On | Off | Off | Off | Off |
| Distortion Correction | 2D | 2D | 2D | Off | 2D | 2D | 2D | 2D |
| Distance Factor | 25% | 25% | 25% | 25% | 33% | 20% | 20% | 20% |
| Slice Thickness | 4.0 mm | 4.0 mm | 4.0 mm | 4.0 mm | 3.0 mm | 3.0 mm | 3.0 mm | 3.0 mm |
| Slices | 38 Slices | 38 Slices | 38 Slices | 38 Slices | 40 Slices | 72 Slices per Slab | 54 Slices per Slab | 54 Slices per Slab |
| Acquisition Time | 1:33 min | 1:44 min | 3:25 min | 4:29 min | 2:16 min | 1:18 min | 1:22 min | 59 sec |