Epilepsy Brain 1.5T
Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols
Instructions And Patient Preparation
- Instructions
- • New onset seizures should be performed as Routine Brain with/without contrast
• Contrast can be used for adult examinations
• Partial complex seizure, intractable seizure in pediatric patients - Position
- Supine, head first
- Coil
- 20 channel Head and Neck coil or better
- 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 | • May use Interpolation & Restore options with lower TR’s • May do postcontrast. Whole brain coverage • MPR to form Coronal Oblique images if not obtained directly. Cover and position perpendicular to temporal lobe • Report agent administered and dose • Use minimal dose for patients with a GFR <60 mL/sec |
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Imaging Parameters
| Scan Description | AXIAL DWI |
AXIAL GRE |
AXIAL T2 |
CORONAL T2 Temporal Lobe |
CORONAL T1 MPRAGE |
Post CORONAL FLAIR SPACE |
Post CORONAL T1 SPACE |
|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | View Image | |
| Sequence Name | epse | fl_r | tse | tse | tfl | spcir | spcir |
| Dimension | ― | 2D | 2D | 2D | 3D | 3D | 3D |
| Acceleration Mode | GRAPPA | None | GRAPPA | None | GRAPPA | GRAPPA | GRAPPA |
| Acceleration Factor PE | 2 | ― | 4 | ― | 2 | 2 | 2 |
| Acceleration Factor 3D | ― | ― | ― | ― | 1 | 1 | 1 |
| AutoAlign | Head > Brain | Head > Brain | Head > Brain | Head > Temporal Lobe | Head > Brain | Head > Brain | Head > Brain |
Acquisition Parameters
| Scan Description | AXIAL DWI |
AXIAL GRE |
AXIAL T2 |
CORONAL T2 Temporal Lobe |
CORONAL T1 MPRAGE |
Post CORONAL FLAIR SPACE |
Post CORONAL T1 SPACE |
|---|---|---|---|---|---|---|---|
| TR | 4800.0 ms | 861.0 ms | 5510.0 ms | 5000.0 ms | 2200.0 ms | 5000.0 ms | 5000.0 ms |
| TE | 82.00 ms | 24.00 ms | 92.00 ms | 99.00 ms | 3.02 ms | 215.00 ms | 215.00 ms |
| TI | ― | ― | ― | ― | 900 ms | 1600 ms | 1600 ms |
| Flip Angle | ― | 20 deg | 150 deg | 160 deg | 8 deg | Mode T2 Var | Mode T2 Var |
| Turbo Factor | ― | ― | 19 | 20 | 202 | 248 | 248 |
| Bandwidth | 1502 Hz/Px | 200 Hz/Px | 191 Hz/Px | 300 Hz/Px | 160 Hz/Px | 592 Hz/Px | 592 Hz/Px |
| EPI Factor | 128 | ― | ― | ― | ― | ― | ― |
| Fat-Water Contrast | Fat Saturation | Standard | Standard | Standard | Standard | Fat Saturation | Fat Saturation |
| Fat Saturation | Weak | ― | ― | ― | ― | Strong | Strong |
| Gradient Mode | Fast | Fast | Normal | Normal | Fast | Fast | Fast |
| RF Pulse Type | Normal | Fast | Fast | Normal | Fast | Fast | Fast |
| Asymmetric Echo | ― | Off | ― | ― | Allowed | ― | ― |
Scan Parameters
| Scan Description | AXIAL DWI |
AXIAL GRE |
AXIAL T2 |
CORONAL T2 Temporal Lobe |
CORONAL T1 MPRAGE |
Post CORONAL FLAIR SPACE |
Post CORONAL T1 SPACE |
|---|---|---|---|---|---|---|---|
| Base Resolution | 128 | 320 | 384 | 320 | 256 | 256 | 256 |
| Phase Resolution | 100% | 70% | 100% | 80% | 100% | 90% | 90% |
| Slice Resolution | ― | ― | ― | ― | 90% | 75% | 75% |
| Averages | ― | 1 | ― | 2 | 1 | 1 | 1 |
| Concatenations | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| FoV Read | 220 mm | 220 mm | 220 mm | 200 mm | 250 mm | 250 mm | 250 mm |
| FoV Phase | 100% | 81% | 81% | 100% | 91% | 88% | 88% |
| Phase Encoding Dir. | A >> P | R >> L | R >> L | R >> L | R >> L | R >> L | R >> L |
| Slice Oversampling | ― | ― | ― | ― | 27% | 27% | 27% |
| Phase Oversampling | 0% | 0% | 30% | 30% | 0% | 0% | 0% |
| Slice Partial Fourier | ― | ― | ― | ― | Off | 7/8 | 7/8 |
| Phase Partial Fourier | 6/8 | Off | Off | Off | Off | Allowed | Allowed |
| Flow Compensation | ― | On | None | None | None | None | None |
Scanning Range
| Scan Description | AXIAL DWI |
AXIAL GRE |
AXIAL T2 |
CORONAL T2 Temporal Lobe |
CORONAL T1 MPRAGE |
Post CORONAL FLAIR SPACE |
Post CORONAL T1 SPACE |
|---|---|---|---|---|---|---|---|
| Raw Filter | On | Off | Off | Off | Off | On | On |
| Elliptical Filter | Off | On | Off | Off | On | Off | Off |
| Distortion Correction | Off | 2D | 2D | 2D | 2D | 2D | 2D |
| Normalize | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan |
| Distance Factor | 0% | 0% | 0% | 0% | 50% | ― | ― |
| Slice Thickness | 5.0 mm | 5.0 mm | 5.0 mm | 3.0 mm | 1.0 mm | 1.00 mm | 1.00 mm |
| Slices | 30 Slices | 30 Slices | 30 Slices | 25 Slices | 176 Slices per Slab | 176 Slices per Slab | 176 Slices per Slab |
| Acquisition Time | 50 sec | 2:38 min | 1:48 min | 2:57 min | 4:41 min | 5:42 min | 5:42 min |