Pediatric Brain Tumor Core 1.5T
Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols
Instructions And Patient Preparation
- Instructions
- Core imaging used on all pediatric brain protocols. Optional sequences added based on clinical indication.
- Position
- Head first supine
- Coil
- Head 20 or Head 64
- Contrast Timing
- T2 is performed immediately post contrast to allow time for peak contrast enhancement on T1 imaging.
- Patient Preparation
- Landmark per department pediatric protocol — pending sign-off.
Contrast Agent Parameters
| Contrast Agent | Dose | Injection Rate | Dose Timing Method and Scan Delay | |||||
|---|---|---|---|---|---|---|---|---|
| Gadopiclenol (VUEWAY) | 0.05 mmol/kg | Hand Bolus or Power Injection | Per department pediatric contrast protocol — pending technologist/radiologist sign-off. | |||||
| Comments | • Use minimal dose for patients with a GFR <60 mL/sec • Report agent administered and dose |
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Imaging Parameters
| Scan Description | SAG 3D T1 MPRAGE | TRANS rDWI | TRAN SWI | Post TRAN T2 TSE |
Post TRAN T2 FLAIR FS |
Post SAG 3D T1 SPACE FS |
Post SAG 3D T1 MPRAGE |
|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | View Image | |
| Sequence Name | tfl | resolve | swi_r | tseR_rr | tir | spcR | tfl |
| Mode | Single Shot | Interleaved | Interleaved | Interleaved | Interleaved | ― | Single Shot |
| PAT Mode | GRAPPA | ― | GRAPPA | None | None | GRAPPA | GRAPPA |
| Dimension | 3D | 2D | 3D | 2D | 2D | 3D | 3D |
| Acceleration Factor PE | 2 | 2 | 2 | ― | ― | 2 | 2 |
| Acceleration Factor 3D | 1 | ― | 1 | ― | ― | 1 | 1 |
Scan Parameters
| Scan Description | SAG 3D T1 MPRAGE | TRANS rDWI | TRAN SWI | Post TRAN T2 TSE |
Post TRAN T2 FLAIR FS |
Post SAG 3D T1 SPACE FS |
Post SAG 3D T1 MPRAGE |
|---|---|---|---|---|---|---|---|
| TR | 1700.0 ms | 5630.0 ms | 49.0 ms | 4260.0 ms | 10000.0 ms | 900.0 ms | 1700.0 ms |
| TE | 2.57 ms | 63 ms / 101 ms | 40.00 ms | 99.00 ms | 109.00 ms | 18.00 ms | 2.57 ms |
| TI | 900 ms | ― | ― | ― | 2600 ms | ― | 900 ms |
| Flip Angle | 8 deg | 180 deg | 15 deg | 180 deg / 90 deg | 150 deg / 90 deg | 120 deg / 90 deg | 8 deg |
| Turbo Factor | 158 | ― | ― | 15 | 16 | 44 | 158 |
| Bandwidth | 170 Hz/Px | 847 Hz/Px | 80 Hz/Px | 130 Hz/Px | 190 Hz/Px | 434 Hz/Px | 170 Hz/Px |
| EPI Factor | ― | 82 | ― | ― | ― | ― | ― |
| Fat Saturation Mode | ― | Strong | ― | ― | Strong | Strong | ― |
| Fat Suppression | Standard | Fat Saturation | Standard | Standard | Fat Saturation | Fat Saturation | Standard |
| Gradient Mode | Normal | Fast | Fast | Normal | Normal | Fast | Normal |
| RF Pulse Type | Fast | Normal | Fast | Normal | Normal | Normal | Fast |
| Asymmetric Echo | Allowed | ― | Off | ― | ― | ― | Allowed |
Acquisition Parameters
| Scan Description | SAG 3D T1 MPRAGE | TRANS rDWI | TRAN SWI | Post TRAN T2 TSE |
Post TRAN T2 FLAIR FS |
Post SAG 3D T1 SPACE FS |
Post SAG 3D T1 MPRAGE |
|---|---|---|---|---|---|---|---|
| Base Resolution | 192 | 164 | 320 | 256 | 256 | 256 | 192 |
| Phase Resolution | 100 % | 100 % | 85 % | 94 % | 100 % | 100 % | 100 % |
| Slice Resolution | 82 % | ― | 81 % | ― | ― | 75 % | 82 % |
| Averages | 1 | ― | 1 | 2 | 1 | 1.0 | 1 |
| Concatenations | 1 | 1 | 1 | 2 | 2 | 1 | 1 |
| b-value | ― | 0 s/mm²/1000 s/mm² | ― | ― | ― | ― | ― |
| FoV Read | 200 mm | 230 mm | 220 mm | 210 mm | 210 mm | 192 mm | 200 mm |
| FoV Phase | 100.0 % | 100.0 % | 87.5 % | 90.6 % | 90.6 % | 100.0 % | 100.0 % |
| Phase Encoding Dir. | A >> P | A >> P | R >> L | R >> L | R >> L | A >> P | A >> P |
| Phase Oversampling | 10 % | 0% | 0% | 0% | 0% | 10 % | 10 % |
| Slice Oversampling | 20.0 % | ― | 0.0 % | ― | ― | 16.7 % | 20.0 % |
| Phase Partial Fourier | Off | Off | Off | Off | Off | Off | Off |
| Slice Partial Fourier | Off | ― | Off | ― | ― | Off | Off |
| Flow Compensation | None | ― | On | Read | None | None | None |
Scanning Range
| Scan Description | SAG 3D T1 MPRAGE | TRANS rDWI | TRAN SWI | Post TRAN T2 TSE |
Post TRAN T2 FLAIR FS |
Post SAG 3D T1 SPACE FS |
Post SAG 3D T1 MPRAGE |
|---|---|---|---|---|---|---|---|
| Elliptical Filter | Off | ― | Off | On | On | Off | Off |
| Normalize | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan |
| Distortion Correction | 2D | 2D | 2D | 2D | 2D | 2D | 2D |
| Slice Thickness | 1.00 mm | 4.0 mm | 1.20 mm | 4.0 mm | 4.0 mm | 0.80 mm | 1.00 mm |
| Distance Factor | 0% | 0% | 0% | 0% | 0% | ― | 0% |
| Slices | 160 | 39 | 72 | 41 | 41 | 192 | 160 |
| Acquisition Time | 3:20 min | 2:34 min | 6:14 min | 4:26 min | 5:22 min | 7:06 min | 3:20 min |