Pediatric Routine Neck (Smaller Patients) 3T
Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols
Instructions And Patient Preparation
- Instructions
- Position the head in the head/neck coil and immobilize with cushions
Give cushions under the legs for extra comfort
Connect the anterior portion of the head coil and secure it in place.
Sedation vs bundle and feed is the ordering provider’s decision - Common Indications
- Thyroid disease
Abscess
Tumor
Airway obstruction - Position
- Head First
Supine - Coil
- Head/Neck 20ch
- Landmark
- Mid neck
- Patient Population
- These protocols are intended for smaller patients and serve as starting points. If a smaller FOV is needed, the parameters are modified accordingly.
Contrast Agent Parameters
| Contrast Agent | Dose | Injection Rate | Dose Timing Method and Scan Delay | |||||
|---|---|---|---|---|---|---|---|---|
| Gadopiclenol (VUEWAY) | 0.1 mL/kg | Hand injected | Post-contrast series acquired after gadolinium administration | |||||
Imaging Parameters
| Scan Description | localizer | COR T2WI DIXON (3mm) |
AX T1WI DIXON (3mm) |
AX T2WI DIXON (3mm) |
AX RESOLVE DWI (3mm Through Lesion) |
POST AX T1WI DIXON (3mm) |
POST COR T1WI DIXON (3mm) |
|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | ||
| Sequence Name | qfl | tseR | tse | tse | resolve | tse | tse |
| Dimension | 2D | 2D | 2D | 2D | 2D | 2D | 2D |
| Acceleration mode | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA |
| Acceleration Factor PE | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Reference Lines PE | 20 | 32 | 32 | 32 | 116 | 32 | 32 |
| Reference Scans | Integrated | Self-calibration | Self-calibration | Self-calibration | EPI/Separate | Self-calibration | Self-calibration |
| Deep Resolve | Off | Off | Off | Off | ― | Off | Off |
Scan Parameters
| Scan Description | localizer | COR T2WI DIXON (3mm) |
AX T1WI DIXON (3mm) |
AX T2WI DIXON (3mm) |
AX RESOLVE DWI (3mm Through Lesion) |
POST AX T1WI DIXON (3mm) |
POST COR T1WI DIXON (3mm) |
|---|---|---|---|---|---|---|---|
| TR | 8.2 ms | 4550.0 ms | 500.0 ms | 3600.0 ms | 3880.0 ms | 500.0 ms | 630.0 ms |
| TE | 3.66 ms | 92.00 ms | 8.90 ms | 86.00 ms | TE 1: 69 ms TE 2: 118 ms |
8.90 ms | 8.90 ms |
| Flip Angle | 20 deg | 160 deg | 160 deg | 140 deg | 180 deg | 160 deg | 160 deg |
| Bandwidth | 320 Hz/Px | 868 Hz/Px | 977 Hz/Px | 558 Hz/Px | 620 Hz/Px | 977 Hz/Px | 977 Hz/Px |
| Turbo Factor | ― | 17 | 4 | 13 | ― | 4 | 4 |
| Echo Spacing | ― | 9.19 ms | 8.88 ms | 10.76 ms | 0.36 ms | 8.88 ms | 8.88 ms |
| Echo Trains per Slice | ― | 16 | 39 | 12 | ― | 39 | 64 |
| EPI Factor | ― | ― | ― | ― | 116 | ― | ― |
| Readout Segments | ― | ― | ― | ― | 7 | ― | ― |
| Gradient Mode | Whisper | Fast | Fast | Fast | Fast | Fast | Fast |
| RF Pulse Type | Normal | Normal | Normal | Normal | Normal | Normal | Normal |
| RF Spoiling | On | ― | ― | ― | ― | ― | ― |
| Asymmetric Echo | Off | Off | Weak | Off | ― | Weak | Off |
| Flow Compensation | None | None | None | None | ― | None | None |
| Reduce Motion Sens. | ― | On | On | On | ― | On | On |
| Phase Correction | ― | Automatic | Automatic | Automatic | ― | Automatic | Automatic |
Contrast & Magnetization
| Scan Description | localizer | COR T2WI DIXON (3mm) |
AX T1WI DIXON (3mm) |
AX T2WI DIXON (3mm) |
AX RESOLVE DWI (3mm Through Lesion) |
POST AX T1WI DIXON (3mm) |
POST COR T1WI DIXON (3mm) |
|---|---|---|---|---|---|---|---|
| Fat-Water Contrast | Standard | Fast Dixon | Fast Dixon | Fast Dixon | Fat Saturation | Fast Dixon | Fast Dixon |
| Fat Saturation | ― | Strong | Strong | Strong | Strong | Strong | Strong |
| Magn. Preparation | None | None | None | None | None | None | None |
| MTC | Off | Off | Off | Off | Off | Off | Off |
| Dark Blood | Off | Off | Off | Off | ― | Off | Off |
| Contrasts | 1 | 1 | 1 | 1 | 2 | 1 | 1 |
| Reconstruction | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude |
| Wrap-up Magn. | ― | Restore | None | None | ― | None | None |
Acquisition Parameters
| Scan Description | localizer | COR T2WI DIXON (3mm) |
AX T1WI DIXON (3mm) |
AX T2WI DIXON (3mm) |
AX RESOLVE DWI (3mm Through Lesion) |
POST AX T1WI DIXON (3mm) |
POST COR T1WI DIXON (3mm) |
|---|---|---|---|---|---|---|---|
| Base Resolution | 256 | 320 | 320 | 320 | 192 | 320 | 320 |
| Phase Resolution | 80 % | 80 % | 80 % | 80 % | 100 % | 80 % | 80 % |
| Averages | 1 | 3 | 3 | 3 | ― | 3 | 3 |
| Concatenations | 15 | 1 | 4 | 2 | 1 | 4 | 2 |
| FoV Read | 300 mm | 240 mm | 240 mm | 240 mm | 240 mm | 240 mm | 240 mm |
| FoV Phase | 100.0 % | 100.0 % | 100.0 % | 100.0 % | 100.0 % | 100.0 % | 100.0 % |
| Phase Encoding Dir. | R >> L | F >> H | A >> P | A >> P | A >> P | A >> P | H >> F |
| Phase Oversampling | 38 % | 100 % | 20 % | 20 % | 20 % | 20 % | 100 % |
| Phase Partial Fourier | Off | Off | Off | Off | Off | Off | Off |
| Readout Partial Fourier | ― | ― | ― | ― | Off | ― | ― |
| Interpolation | On | Off | Off | Off | On | Off | Off |
| Trajectory | ― | Cartesian | Cartesian | Cartesian | ― | Cartesian | Cartesian |
| Multi-Slice Mode | Sequential | Interleaved | Interleaved | Interleaved | Interleaved | Interleaved | Interleaved |
Scanning Range
| Scan Description | localizer | COR T2WI DIXON (3mm) |
AX T1WI DIXON (3mm) |
AX T2WI DIXON (3mm) |
AX RESOLVE DWI (3mm Through Lesion) |
POST AX T1WI DIXON (3mm) |
POST COR T1WI DIXON (3mm) |
|---|---|---|---|---|---|---|---|
| Slice Thickness | 6.0 mm | 3.0 mm | 3.0 mm | 3.0 mm | 3.0 mm | 3.0 mm | 3.0 mm |
| Slices | 5 Slices | 25 Slices | 40 Slices | 40 Slices | 20 Slices | 40 Slices | 25 Slices |
| Distance Factor | 50 % | 10 % | 10 % | 10 % | 10 % | 10 % | 10 % |
| Special Saturation | None | None | None | Parallel F/H | None | None | None |
| Raw Filter | Off | Off | Off | Off | On | Off | Off |
| Elliptical Filter | Off | Off | Off | Off | ― | Off | Off |
| Image Filter | Off | Off | Off | Off | ― | Off | Off |
| Distortion Correction | 2D | 2D | 2D | 2D | 2D | 2D | 2D |
| Normalize | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan |
| Noise Masking | ― | ― | ― | ― | On | ― | ― |
| Time of Acquisition | 20 sec | 3:44 min | 3:56 min | 4:28 min | 5:39 min | 3:56 min | 4:03 min |
Diffusion
| Scan Description | localizer | COR T2WI DIXON (3mm) |
AX T1WI DIXON (3mm) |
AX T2WI DIXON (3mm) |
AX RESOLVE DWI (3mm Through Lesion) |
POST AX T1WI DIXON (3mm) |
POST COR T1WI DIXON (3mm) |
|---|---|---|---|---|---|---|---|
| Diffusion Mode | ― | ― | ― | ― | 3D Diagonal | ― | ― |
| Diffusion Scheme | ― | ― | ― | ― | Monopolar | ― | ― |
| Diff. Directions | ― | ― | ― | ― | 1 | ― | ― |
| b-value 1 | ― | ― | ― | ― | 50 s/mm² | ― | ― |
| b-value 2 | ― | ― | ― | ― | 800 s/mm² | ― | ― |
| Averages b-value 1 | ― | ― | ― | ― | 4 | ― | ― |
| Averages b-value 2 | ― | ― | ― | ― | 8 | ― | ― |
| Diff. Weightings | ― | ― | ― | ― | 2 | ― | ― |
| Diff. Weighted Images | ― | ― | ― | ― | On | ― | ― |
| Trace Weighted Images | ― | ― | ― | ― | Off | ― | ― |
| ADC Maps | ― | ― | ― | ― | On | ― | ― |
| Exponential ADC Maps | ― | ― | ― | ― | Off | ― | ― |
| FA Maps | ― | ― | ― | ― | Off | ― | ― |
| Calculated Image | ― | ― | ― | ― | Off | ― | ― |