Pediatric Bone Lesion Aggressive (Smaller Patients) 3T
Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols
Instructions And Patient Preparation
- Instructions
- Dependent on which anatomy is being scanned
Sedation vs bundle and feed is the ordering provider’s decision - Common Indications
- Osteosarcoma
Lymphoma
Langerhans Cell Histiocytosis
Malignant Nerve Sheath Tumor - Position
- Dependent on which anatomy is being scanned
- Coil
- Dependent on which anatomy is being scanned
- Landmark
- Dependent on which anatomy is being scanned
- 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 | AX STIR |
AX T1 FS |
AX PD |
AX DWI B50_800 |
COR T2 STIR |
COR T1 |
POST AX T1 FS |
POST COR T1 FS |
|---|---|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | ||
| Sequence Name | fl | tir | tse | tseR | epse | tir | tse | tse | tse |
| Dimension | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D |
| Acceleration mode | None | GRAPPA | GRAPPA | None | SMS | GRAPPA | None | GRAPPA | GRAPPA |
| Acceleration Factor PE | ― | 2 | 2 | ― | 2 | 2 | ― | 2 | 2 |
| Reference Lines PE | ― | 35 | 32 | ― | 50 | 32 | ― | 32 | 32 |
| Reference Scans | ― | Integrated | Self-calibration | ― | GRE/Separate | Self-calibration | ― | Self-calibration | Self-calibration |
| Deep Resolve | Off | Off | Off | Off | Off | Off | Off | Off | Off |
Scan Parameters
| Scan Description | localizer | AX STIR |
AX T1 FS |
AX PD |
AX DWI B50_800 |
COR T2 STIR |
COR T1 |
POST AX T1 FS |
POST COR T1 FS |
|---|---|---|---|---|---|---|---|---|---|
| TR | 7.8 ms | 3550.0 ms | 696.0 ms | 3000.0 ms | 4400.0 ms | 3550.0 ms | 695.0 ms | 696.0 ms | 640.0 ms |
| TE | 3.69 ms | 53.00 ms | 12.00 ms | 30.00 ms | 59.00 ms | 58.00 ms | 9.10 ms | 12.00 ms | 9.10 ms |
| TI | ― | 210 ms | ― | ― | ― | 220 ms | ― | ― | ― |
| Flip Angle | 20 deg | 120 deg | 120 deg | 150 deg | ― | 158 deg | 122 deg | 120 deg | 122 deg |
| Bandwidth | 320 Hz/Px | 217 Hz/Px | 198 Hz/Px | 240 Hz/Px | 2170 Hz/Px | 200 Hz/Px | 223 Hz/Px | 198 Hz/Px | 223 Hz/Px |
| Turbo Factor | ― | 7 | 3 | 7 | ― | 9 | 3 | 3 | 3 |
| Echo Spacing | ― | 8.75 ms | 11.8 ms | 10.1 ms | 0.55 ms | 9.60 ms | 9.08 ms | 11.8 ms | 9.08 ms |
| Echo Trains per Slice | ― | 18 | 33 | 33 | ― | 14 | 67 | 33 | 34 |
| EPI Factor | ― | ― | ― | ― | 104 | ― | ― | ― | ― |
| Gradient Mode | Normal | Fast | Fast | Fast | Fast | Fast | Fast | Fast | Fast |
| RF Pulse Type | Normal | Fast | Low SAR | Low SAR | Low SAR | Normal | Normal | Low SAR | Normal |
| RF Spoiling | On | ― | ― | ― | ― | ― | ― | ― | ― |
| Asymmetric Echo | Off | ― | ― | ― | ― | ― | ― | ― | ― |
| Flow Compensation | None | None | None | None | ― | None | None | None | None |
| Reduce Motion Sens. | ― | Off | On | On | ― | On | Off | On | Off |
| Phase Correction | ― | Automatic | Automatic | Automatic | External | Automatic | Automatic | Automatic | Automatic |
Contrast & Magnetization
| Scan Description | localizer | AX STIR |
AX T1 FS |
AX PD |
AX DWI B50_800 |
COR T2 STIR |
COR T1 |
POST AX T1 FS |
POST COR T1 FS |
|---|---|---|---|---|---|---|---|---|---|
| Fat-Water Contrast | Standard | Standard | Fat Saturation | Standard | SPAIR | Standard | Standard | Fat Saturation | Fat Saturation |
| Fat Saturation | ― | ― | Strong | ― | Strong | ― | ― | Strong | Strong |
| Magn. Preparation | None | Slice-sel. IR | None | None | None | Slice-sel. IR | None | None | None |
| MTC | Off | Off | Off | Off | Off | Off | Off | Off | Off |
| Dark Blood | Off | Off | Off | Off | ― | Off | Off | Off | Off |
| Contrasts | 1 | 1 | 1 | 1 | ― | 1 | 1 | 1 | 1 |
| Reconstruction | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude | Magnitude |
| Wrap-up Magn. | ― | None | None | Restore | ― | None | None | None | None |
Acquisition Parameters
| Scan Description | localizer | AX STIR |
AX T1 FS |
AX PD |
AX DWI B50_800 |
COR T2 STIR |
COR T1 |
POST AX T1 FS |
POST COR T1 FS |
|---|---|---|---|---|---|---|---|---|---|
| Base Resolution | 256 | 320 | 320 | 320 | 128 | 320 | 320 | 320 | 320 |
| Phase Resolution | 80 % | 80 % | 70 % | 80 % | 100 % | 75 % | 70 % | 70 % | 70 % |
| Averages | 1 | 1 | 2 | 1 | ― | 2 | 2 | 2 | 2 |
| Concatenations | 21 | 3 | 5 | 2 | 1 | 2 | 2 | 5 | 3 |
| FoV Read | 400 mm | 200 mm | 200 mm | 200 mm | 340 mm | 380 mm | 380 mm | 200 mm | 380 mm |
| FoV Phase | 100.0 % | 84.4 % | 81.3 % | 81.3 % | 81.3 % | 81.3 % | 81.3 % | 81.3 % | 81.3 % |
| Phase Encoding Dir. | R >> L | A >> P | A >> P | A >> P | A >> P | R >> L | R >> L | A >> P | R >> L |
| Phase Oversampling | 25 % | 0 % | 8 % | 8 % | 0 % | 25 % | 10 % | 8 % | 10 % |
| Phase Partial Fourier | Off | Off | Off | Off | Off | Off | Off | Off | Off |
| Interpolation | On | On | Off | On | On | Off | Off | Off | Off |
| Multi-Slice Mode | Sequential | Interleaved | Interleaved | Interleaved | Interleaved | Interleaved | Interleaved | Interleaved | Interleaved |
Scanning Range
| Scan Description | localizer | AX STIR |
AX T1 FS |
AX PD |
AX DWI B50_800 |
COR T2 STIR |
COR T1 |
POST AX T1 FS |
POST COR T1 FS |
|---|---|---|---|---|---|---|---|---|---|
| Slice Thickness | 6.0 mm | 4.0 mm | 4.0 mm | 4.0 mm | 5.0 mm | 4.0 mm | 4.0 mm | 4.0 mm | 4.0 mm |
| Slices | 11 Slices | 60 Slices | 60 Slices | 60 Slices | 48 Slices | 39 Slices | 39 Slices | 60 Slices | 39 Slices |
| Distance Factor | 200 % | 20 % | 20 % | 20 % | 20 % | 10 % | 10 % | 20 % | 10 % |
| Special Saturation | None | None | None | None | None | None | None | None | None |
| Raw Filter | Off | Off | Off | Off | On | Off | Off | Off | Off |
| Elliptical Filter | On | On | On | On | Off | On | On | On | On |
| Image Filter | Off | Off | Off | Off | ― | Off | Off | Off | Off |
| Distortion Correction | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D |
| Normalize | Prescan | Prescan | B1 Filter | B1 Filter | Prescan | Prescan | Prescan | B1 Filter | Prescan |
| Noise Masking | ― | ― | ― | ― | Off | ― | ― | ― | ― |
| Time of Acquisition | 43 sec | 3:24 min | 3:55 min | 3:26 min | 2:33 min | 3:27 min | 3:09 min | 3:55 min | 2:14 min |
Diffusion
| Scan Description | localizer | AX STIR |
AX T1 FS |
AX PD |
AX DWI B50_800 |
COR T2 STIR |
COR T1 |
POST AX T1 FS |
POST COR T1 FS |
|---|---|---|---|---|---|---|---|---|---|
| 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 | ― | ― | ― | ― | 5 | ― | ― | ― | ― |
| Averages b-value 2 | ― | ― | ― | ― | 20 | ― | ― | ― | ― |
| Diff. Weightings | ― | ― | ― | ― | 2 | ― | ― | ― | ― |
| Diff. Weighted Images | ― | ― | ― | ― | On | ― | ― | ― | ― |
| Trace Weighted Images | ― | ― | ― | ― | Off | ― | ― | ― | ― |
| ADC Maps | ― | ― | ― | ― | On | ― | ― | ― | ― |
| Exponential ADC Maps | ― | ― | ― | ― | Off | ― | ― | ― | ― |
| FA Maps | ― | ― | ― | ― | Off | ― | ― | ― | ― |
| Calculated Image | ― | ― | ― | ― | Off | ― | ― | ― | ― |
Post-Processing / Inline
| Scan Description | localizer | AX STIR |
AX T1 FS |
AX PD |
AX DWI B50_800 |
COR T2 STIR |
COR T1 |
POST AX T1 FS |
POST COR T1 FS |
|---|---|---|---|---|---|---|---|---|---|
| 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 | On |
