Pediatric Routine Complete Spine (Smaller Patients) 3T
Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols
Instructions And Patient Preparation
- Instructions
- Position the patient in supine position with head pointing towards the magnet
Position the patient over the spine coil, and position the head in the head coil and immobilize with cushions
Give a pillow under the patient’s knees for extra comfort
Sedation vs bundle and feed is the ordering provider’s decision - Common Indications
- Pain
Infection
Demyelination
Trauma
Tumor
Gait Disturbance - Position
- Head First
Supine - Coil
- Head/Neck 20ch
Spine Coil - 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.
Imaging Parameters
| Scan Description | I_AAspine_scout | II_AAspine_scout | III_AAspine_scout | SAG T2WI STIR ENTIRE SPINE |
SAG T1WI ENTIRE SPINE |
SAG TRUFISP ENTIRE SPINE |
AX T2WI ENTIRE SPINE |
AX T1WI VIBE CONUS DOWN |
|---|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | ||||
| Sequence Name | fl | fl | fl | tir_rr | tir | tfi | tse_rs | fl |
| Dimension | 3D | 3D | 3D | 2D | 2D | 3D | 2D | 3D |
| Acceleration mode | GRAPPA | GRAPPA | GRAPPA | None | GRAPPA | GRAPPA | None | None |
| Acceleration Factor PE | 3 | 3 | 3 | ― | 2 | 2 | ― | ― |
| Acceleration Factor 3D | 1 | 1 | 1 | ― | ― | 1 | ― | ― |
| Reference Lines PE | 24 | 24 | 24 | ― | 27 | 24 | ― | ― |
| Reference Scans | Integrated | Integrated | Integrated | ― | Integrated | Integrated | ― | ― |
| Deep Resolve | ― | ― | ― | Off | Off | ― | Off | ― |
Scan Parameters
| Scan Description | I_AAspine_scout | II_AAspine_scout | III_AAspine_scout | SAG T2WI STIR ENTIRE SPINE |
SAG T1WI ENTIRE SPINE |
SAG TRUFISP ENTIRE SPINE |
AX T2WI ENTIRE SPINE |
AX T1WI VIBE CONUS DOWN |
|---|---|---|---|---|---|---|---|---|
| TR | 3.30 ms | 3.30 ms | 3.30 ms | 3500.0 ms | 2000.0 ms | 1352.89 ms | 4400.0 ms | 7.00 ms |
| TE | 1.27 ms | 1.27 ms | 1.27 ms | 53.00 ms | 9.90 ms | 2.12 ms | 102.00 ms | 2.57 ms |
| TI | ― | ― | ― | 220 ms | 900 ms | ― | ― | ― |
| Flip Angle | 8 deg | 8 deg | 8 deg | 150 deg | 150 deg | 70 deg | 160 deg | 12 deg |
| Bandwidth | 550 Hz/Px | 550 Hz/Px | 550 Hz/Px | 296 Hz/Px | 275 Hz/Px | 574 Hz/Px | 251 Hz/Px | 220 Hz/Px |
| Turbo Factor | ― | ― | ― | 16 | 5 | ― | 17 | ― |
| Echo Spacing | ― | ― | ― | 8.82 ms | 9.92 ms | 4.86 ms | 11.4 ms | ― |
| Echo Trains per Slice | ― | ― | ― | 32 | 54 | ― | 22 | ― |
| Gradient Mode | Normal | Normal | Normal | Fast | Fast | Fast | Fast | Fast |
| RF Pulse Type | Fast | Fast | Fast | Normal | Low SAR | Normal | Low SAR | Fast |
| RF Spoiling | On | On | On | ― | ― | ― | ― | On |
| Asymmetric Echo | Weak | Weak | Weak | ― | ― | Weak | ― | Weak |
| Flow Compensation | ― | ― | ― | Read | None | ― | Slice | ― |
| Reduce Motion Sens. | ― | ― | ― | On | On | ― | On | ― |
| Phase Correction | ― | ― | ― | Automatic | Automatic | ― | Automatic | ― |
Contrast & Magnetization
| Scan Description | I_AAspine_scout | II_AAspine_scout | III_AAspine_scout | SAG T2WI STIR ENTIRE SPINE |
SAG T1WI ENTIRE SPINE |
SAG TRUFISP ENTIRE SPINE |
AX T2WI ENTIRE SPINE |
AX T1WI VIBE CONUS DOWN |
|---|---|---|---|---|---|---|---|---|
| Fat-Water Contrast | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard |
| Magn. Preparation | ― | ― | ― | Slice-sel. IR | Slice-sel. IR | None | None | ― |
| MTC | ― | ― | ― | Off | Off | ― | Off | ― |
| Dark Blood | ― | ― | ― | Off | Off | Off | Off | ― |
| Contrasts | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Reconstruction | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude |
| Wrap-up Magn. | ― | ― | ― | None | None | None | None | ― |
Acquisition Parameters
| Scan Description | I_AAspine_scout | II_AAspine_scout | III_AAspine_scout | SAG T2WI STIR ENTIRE SPINE |
SAG T1WI ENTIRE SPINE |
SAG TRUFISP ENTIRE SPINE |
AX T2WI ENTIRE SPINE |
AX T1WI VIBE CONUS DOWN |
|---|---|---|---|---|---|---|---|---|
| Base Resolution | 240 | 240 | 240 | 256 | 256 | 256 | 240 | 224 |
| Phase Resolution | 100 % | 100 % | 100 % | 100 % | 100 % | 100 % | 100 % | 100 % |
| Slice Resolution | 68 % | 68 % | 68 % | ― | ― | 80 % | ― | 100 % |
| Averages | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 |
| Concatenations | 1 | 1 | 1 | 2 | 2 | 1 | 3 | 1 |
| FoV Read | 400 mm | 400 mm | 400 mm | 160 mm | 160 mm | 160 mm | 140 mm | 140 mm |
| FoV Phase | 100.0 % | 100.0 % | 100.0 % | 100.0 % | 100.0 % | 100.0 % | 100.0 % | 100.0 % |
| Phase Encoding Dir. | F >> H | F >> H | F >> H | A >> P | A >> P | A >> P | A >> P | A >> P |
| Phase Oversampling | 10 % | 10 % | 10 % | 100 % | 100 % | 100 % | 50 % | 50 % |
| Slice Oversampling | 7.1 % | 7.1 % | 7.1 % | ― | ― | 57.1 % | ― | 62.5 % |
| Phase Partial Fourier | 6/8 | 6/8 | 6/8 | Off | Off | Off | Off | Off |
| Slice Partial Fourier | 6/8 | 6/8 | 6/8 | ― | ― | Off | ― | Off |
| Interpolation | ― | ― | ― | Off | Off | On | Off | Off |
| Trajectory | Cartesian | Cartesian | Cartesian | ― | ― | Cartesian | ― | Cartesian |
| Multi-Slice Mode | Sequential | Sequential | Sequential | Interleaved | Interleaved | Sequential | Interleaved | ― |
Scanning Range
| Scan Description | I_AAspine_scout | II_AAspine_scout | III_AAspine_scout | SAG T2WI STIR ENTIRE SPINE |
SAG T1WI ENTIRE SPINE |
SAG TRUFISP ENTIRE SPINE |
AX T2WI ENTIRE SPINE |
AX T1WI VIBE CONUS DOWN |
|---|---|---|---|---|---|---|---|---|
| Slice Thickness | 1.7 mm | 1.7 mm | 1.7 mm | 3.0 mm | 3.0 mm | 1.00 mm | 3.0 mm | 3.0 mm |
| Slices | 112 Slices per Slab |
112 Slices per Slab |
112 Slices per Slab |
15 Slices | 15 Slices | 56 Slices per Slab |
56 Slices | 64 Slices per Slab |
| Distance Factor | 20 % | 20 % | 20 % | 10 % | 10 % | -9 % | 10 % | 20 % |
| Special Saturation | ― | ― | ― | None | None | None | None | None |
| Raw Filter | Off | Off | Off | Off | Off | Off | Off | Off |
| Elliptical Filter | Off | Off | Off | On | On | Off | On | On |
| Image Filter | Off | Off | Off | On | On | Off | On | Off |
| Distortion Correction | 3D | 3D | 3D | 2D | 2D | 2D | 2D | 2D |
| Normalize | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan |
| Noise Masking | Off | Off | Off | ― | ― | ― | ― | Off |
| Time of Acquisition | 19 sec | 19 sec | 19 sec | 3:51 min | 3:40 min | 3:11 min | 5:05 min | 4:06 min |
Post-Processing / Inline
| Scan Description | I_AAspine_scout | II_AAspine_scout | III_AAspine_scout | SAG T2WI STIR ENTIRE SPINE |
SAG T1WI ENTIRE SPINE |
SAG TRUFISP ENTIRE SPINE |
AX T2WI ENTIRE SPINE |
AX T1WI VIBE CONUS DOWN |
|---|---|---|---|---|---|---|---|---|
| Subtract | Off | Off | Off | Off | Off | Off | Off | Off |
| Subtract Measurements | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| StdDev | Off | Off | Off | Off | Off | Off | Off | Off |
| MIP Sagittal | Off | Off | Off | Off | Off | Off | Off | Off |
| MIP Coronal | Off | Off | Off | Off | Off | Off | Off | Off |
| MIP Transversal | Off | Off | Off | Off | Off | Off | Off | Off |
| MIP Time | Off | Off | Off | Off | Off | Off | Off | Off |
| Radial MIP | Off | Off | Off | Off | Off | Off | Off | Off |
| MPR Sagittal | Off | Off | Off | Off | Off | Off | Off | Off |
| MPR Coronal | Off | Off | Off | Off | Off | Off | Off | Off |
| MPR Transversal | Off | Off | Off | Off | Off | Off | Off | Off |
| Inline Composing | On | On | On | On | On | On | On | Off |