Orbits 1.5T
Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols
Instructions And Patient Preparation
- Instructions
- • These sequences usually done in addition to Routine Adult Brain protocol
• Have patient close eyes for these sequences
• Cover orbits through optic nerve - Position
- Supine, head first
- Coil
- Head/Neck coil
- Landmark
- Glabella
Contrast Agent Parameters
| Contrast Agent | Dose | Injection Rate | |||||
|---|---|---|---|---|---|---|---|
| Gadopiclenol (VUEWAY) | 0.05 mmol/kg | Hand Bolus | |||||
| Saline Flush | 10 mL | Hand Bolus | |||||
| Comments | • Consider using TSE DIXON to reduce susceptibility problems • Report agent administered and dose • Use minimal dose for patients with a GFR <60 mL/sec |
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Imaging Parameters
| Scan Description | CORONAL STIR |
CORONAL T1 |
AXIAL T2 |
AXIAL BLADE DWI |
Post AXIAL T1 Fat Sat |
Post CORONAL T1 Fat Sat |
Post SAGITTAL 3D FLAIR SPACE |
|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | View Image | |
| Sequence Name | tir | tse | tseR | resolve | tse | tse | spcir |
| Dimension | 2D | 2D | 2D | 2D | 2D | 2D | 3D |
| Acceleration Mode | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA | CAIPIRINHA |
| Acceleration Factor PE | 3 | 3 | 3 | 2 | 3 | 3 | 2 |
| Acceleration Factor 3D | ― | ― | ― | ― | ― | ― | 2 |
| AutoAlign | Head > Optic Nerves | Head > Optic Nerves | Head > Orbits | Head > Orbits | Head > Orbits | Head > Optic Nerves | Head > Basis |
Acquisition Parameters
| Scan Description | CORONAL STIR |
CORONAL T1 |
AXIAL T2 |
AXIAL BLADE DWI |
Post AXIAL T1 Fat Sat |
Post CORONAL T1 Fat Sat |
Post SAGITTAL 3D FLAIR SPACE |
|---|---|---|---|---|---|---|---|
| TR | 3000.0 ms | 670.0 ms | 3760.0 ms | 6000.0 ms | 500.0 ms | 630.0 ms | 5000.0 ms |
| TE | 49.00 ms | 8.20 ms | 97.00 ms | TE 1: 59 ms TE 2: 94 ms |
8.70 ms | 8.70 ms | 338.00 ms |
| TI | 160 ms | ― | ― | ― | ― | ― | 1600 ms |
| Flip Angle | 150 deg | 150 deg | 150 deg | 180 deg | 150 deg | 150 deg | Mode T2 Var |
| Turbo Factor | 10 | 2 | 17 | ― | 2 | 2 | 249 |
| Bandwidth | 200 Hz/Px | 209 Hz/Px | 171 Hz/Px | ― | 191 Hz/Px | 191 Hz/Px | None |
| EPI Factor | ― | ― | ― | 75 | ― | ― | ― |
| Fat-Water Contrast | Standard | Standard | Standard | Fat Saturation | Fat Saturation | Fat Saturation | Fat Saturation |
| Fat Saturation | ― | ― | ― | Strong | Strong | Strong | Strong |
| Gradient Mode | Normal | Normal | Normal | Fast | Normal | Normal | Fast |
| RF Pulse Type | Normal | Fast | Fast | Normal | Fast | Fast | Non-sel. |
Scan Parameters
| Scan Description | CORONAL STIR |
CORONAL T1 |
AXIAL T2 |
AXIAL BLADE DWI |
Post AXIAL T1 Fat Sat |
Post CORONAL T1 Fat Sat |
Post SAGITTAL 3D FLAIR SPACE |
|---|---|---|---|---|---|---|---|
| Base Resolution | 288 | 288 | 352 | 150 | 288 | 288 | 256 |
| Phase Resolution | 75% | 86% | 80% | 100% | 84% | 80% | 90% |
| Slice Resolution | ― | ― | ― | ― | ― | ― | 70% |
| Averages | 2 | 2 | 2 | ― | 2 | 2 | 2 |
| Concatenations | 2 | 1 | 1 | 1 | 2 | 2 | 1 |
| FoV Read | 170 mm | 170 mm | 170 mm | 200 mm | 170 mm | 170 mm | 260 mm |
| FoV Phase | 100% | 100% | 100% | 100% | 100% | 100% | 88% |
| Phase Encoding Dir. | R >> L | R >> L | R >> L | A >> P | R >> L | R >> L | A >> P |
| Slice Oversampling | ― | ― | ― | ― | ― | ― | 9% |
| Phase Oversampling | 60% | 80% | 100% | 0% | 80% | 60% | 0% |
| Slice Partial Fourier | ― | ― | ― | ― | ― | ― | Off |
| Phase Partial Fourier | Off | Off | Off | ― | Off | Off | Allowed |
| Flow Compensation | None | None | None | 667 Hz/Px | None | None | Fast |
Scanning Range
| Scan Description | CORONAL STIR |
CORONAL T1 |
AXIAL T2 |
AXIAL BLADE DWI |
Post AXIAL T1 Fat Sat |
Post CORONAL T1 Fat Sat |
Post SAGITTAL 3D FLAIR SPACE |
|---|---|---|---|---|---|---|---|
| Raw Filter | Off | Off | Off | On | Off | Off | On |
| Elliptical Filter | Off | Off | Off | ― | Off | Off | Off |
| Distortion Correction | 2D | 2D | 2D | Off | 2D | 2D | 2D |
| Normalize | Image Based | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan |
| Image Filter | Off | Off | Off | ― | Off | Off | Off |
| Distance Factor | 18% | 18% | 10% | 0% | 10% | 18% | ― |
| Slice Thickness | 3.0 mm | 3.0 mm | 3.0 mm | 3.0 mm | 3.0 mm | 3.0 mm | 1.0 mm |
| Slices | 28 Slices | 28 Slices | 21 Slices | 21 Slices | 21 Slices | 28 Slices | 176 Slices per Slab |
| Acquisition Time | 2:56 min | 1:46 min | 1:39 min | 3:20 min | 2:32 min | 2:44 min | 5:07 min |