Pediatric Routine Pelvis (MSK Hips, 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 place the body coil over the pelvis
Securely tighten the body coil using straps to prevent respiratory artifacts
Give a pillow under the patient’s head for extra comfort
Sedation vs bundle and feed is the ordering provider’s decision - Common Indications
- Pain
Trauma - Position
- Head First
Supine - Coil
- Body Coil
Spine Coil - Landmark
- Anterior Superior Iliac Spine
- 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 | localizer | AX T1 BILAT |
AX PD FS BILAT |
COR T1 BILAT |
COR STIR BILAT |
PD SAG FS 2MM DRB |
|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | ||
| Sequence Name | fl | tse | tseR | tse | tir | tseR |
| Dimension | 2D | 2D | 2D | 2D | 2D | 2D |
| Acceleration mode | None | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA |
| Acceleration Factor PE | ― | 2 | 2 | 2 | 2 | 2 |
| Reference Lines PE | ― | 32 | 32 | 32 | 32 | 32 |
| Reference Scans | ― | Self-calibration | Self-calibration | Self-calibration | Self-calibration | TSE/Separate |
| Deep Resolve | Off | Off | Off | Off | Off | On |
Scan Parameters
| Scan Description | localizer | AX T1 BILAT |
AX PD FS BILAT |
COR T1 BILAT |
COR STIR BILAT |
PD SAG FS 2MM DRB |
|---|---|---|---|---|---|---|
| TR | 7.8 ms | 753.0 ms | 4160.0 ms | 646.0 ms | 3500.0 ms | 3250.0 ms |
| TE | 3.69 ms | 9.80 ms | 37.00 ms | 9.40 ms | 50.00 ms | 33.00 ms |
| TI | ― | ― | ― | ― | 220 ms | ― |
| Flip Angle | 20 deg | 150 deg | 150 deg | 150 deg | 180 deg | 150 deg |
| Bandwidth | 320 Hz/Px | 241 Hz/Px | 231 Hz/Px | 223 Hz/Px | 199 Hz/Px | 181 Hz/Px |
| Turbo Factor | ― | 3 | 11 | 3 | 9 | 9 |
| Echo Spacing | ― | 9.80 ms | 9.34 ms | 9.40 ms | 9.94 ms | 11.0 ms |
| Echo Trains per Slice | ― | 51 | 12 | 59 | 20 | 21 |
| Gradient Mode | Normal | Normal | Fast | Fast | Fast | Normal |
| RF Pulse Type | Normal | Normal | Normal | Normal | Normal | Normal |
| RF Spoiling | On | ― | ― | ― | ― | ― |
| Asymmetric Echo | Off | ― | ― | ― | ― | ― |
| Flow Compensation | None | None | None | None | None | None |
| Reduce Motion Sens. | ― | On | On | Off | On | Off |
| Phase Correction | ― | Automatic | Automatic | Automatic | Automatic | Automatic |
Contrast & Magnetization
| Scan Description | localizer | AX T1 BILAT |
AX PD FS BILAT |
COR T1 BILAT |
COR STIR BILAT |
PD SAG FS 2MM DRB |
|---|---|---|---|---|---|---|
| Fat-Water Contrast | Standard | Standard | SPAIR | Standard | Standard | Fat Saturation |
| Fat Saturation | ― | ― | Weak | ― | ― | Strong |
| Magn. Preparation | None | None | None | None | Slice-sel. IR | None |
| MTC | Off | Off | Off | Off | Off | Off |
| Dark Blood | Off | Off | Off | Off | Off | Off |
| Contrasts | 1 | 1 | 1 | 1 | 1 | 1 |
| Reconstruction | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude |
| Wrap-up Magn. | ― | None | Restore | None | None | Restore |
Acquisition Parameters
| Scan Description | localizer | AX T1 BILAT |
AX PD FS BILAT |
COR T1 BILAT |
COR STIR BILAT |
PD SAG FS 2MM DRB |
|---|---|---|---|---|---|---|
| Base Resolution | 256 | 576 | 480 | 448 | 448 | 256 |
| Phase Resolution | 80 % | 70 % | 70 % | 70 % | 70 % | 80 % |
| Averages | 1 | 2 | 2 | 2 | 2 | 1 |
| Concatenations | 17 | 2 | 2 | 2 | 2 | 2 |
| FoV Read | 400 mm | 380 mm | 380 mm | 380 mm | 380 mm | 160 mm |
| FoV Phase | 100.0 % | 75.0 % | 75.8 % | 75.0 % | 75.0 % | 100.0 % |
| Phase Encoding Dir. | A >> P | A >> P | A >> P | F >> H | F >> H | A >> P |
| Phase Oversampling | 25 % | 0 % | 0 % | 50 % | 50 % | 80 % |
| Phase Partial Fourier | Off | Off | Off | Off | Off | Off |
| Interpolation | On | Off | Off | Off | Off | On |
| Multi-Slice Mode | Sequential | Interleaved | Interleaved | Interleaved | Interleaved | Interleaved |
Scanning Range
| Scan Description | localizer | AX T1 BILAT |
AX PD FS BILAT |
COR T1 BILAT |
COR STIR BILAT |
PD SAG FS 2MM DRB |
|---|---|---|---|---|---|---|
| Slice Thickness | 6.0 mm | 5.0 mm | 5.0 mm | 4.0 mm | 4.0 mm | 2.0 mm |
| Slices | 7 Slices | 40 Slices | 40 Slices | 36 Slices | 36 Slices | 50 Slices |
| Distance Factor | 100 % | 20 % | 20 % | 10 % | 10 % | 10 % |
| Special Saturation | None | None | None | None | None | None |
| Raw Filter | Off | Off | Off | Off | Off | Off |
| Elliptical Filter | On | On | On | On | On | Off |
| Image Filter | Off | Off | Off | Off | Off | Off |
| Distortion Correction | 2D | 2D | 2D | 2D | 2D | 2D |
| Normalize | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan |
| Time of Acquisition | 35 sec | 2:37 min | 3:30 min | 2:35 min | 4:49 min | 2:40 min |
