Epilepsy Brain 3T
Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols
Instructions And Patient Preparation
- Instructions
- • New onset seizures should be performed as Routine Adult 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 • All Coronal Oblique sequences positioned similarly. 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 |
CORONAL FLAIR SPACE |
Post CORONAL FLAIR SPACE |
Post CORONAL T1 SPACE |
|---|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | |
| Sequence name | epse | fl_r | tseR | tfl | tseR | spcir | spcR | spcir |
| Mode | ― | 2D | 2D | 3D | 2D | 3D | 3D | 3D |
| PAT Mode | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA | CAIPIRINHA | GRAPPA | CAIPIRINHA |
| Acceleration Factor PE | 2 | 2 | 4 | 2 | 4 | 2 | 2 | 2 |
| Acceleration Factor 3D | ― | ― | ― | 1 | ― | 2 | 2 | 2 |
| AutoAlign | Head > Brain | Head > Brain | Head > Temporal Lobe |
Head > Temporal Lobe |
Head > Brain | Head > Temporal Lobe |
Head > Temporal Lobe |
Head > Brain |
Scan Parameters
| Scan Description | AXIAL DWI |
AXIAL GRE |
AXIAL T2 |
CORONAL T2 Temporal Lobe |
CORONAL T1 MPRAGE |
CORONAL FLAIR SPACE |
Post CORONAL FLAIR SPACE |
Post CORONAL T1 SPACE |
|---|---|---|---|---|---|---|---|---|
| TR | 6700.0 ms | 743.0 ms | 3510.0 ms | 2200.0 ms | 3500.0 ms | 720.0 ms | 720.0 ms | 6000.0 ms |
| TE | 73.00 ms | 19.80 ms | 89.00 ms | 2.48 ms | 99.00 ms | 16.00 ms | 16.00 ms | 351.00 ms |
| TI | ― | ― | ― | 900 ms | ― | 1800 ms | ― | 1800 ms |
| Flip Angle | ― | 20 deg | 150 deg | 8 deg | 150 deg | Mode T1 Var | Mode T1 Var | Mode T2 Var |
| Turbo Factor | ― | ― | 18 | 224 | 20 | 196 | 42 | 196 |
| Bandwidth | 1502 Hz/Px | 220 Hz/Px | 260 Hz/Px | 250 Hz/Px | 303 Hz/Px | 698 Hz/Px | 630 Hz/Px | 698 Hz/Px |
| EPI Factor | 128 | ― | ― | ― | ― | ― | ― | ― |
| Fat-Water Contrast | Strong | ― | ― | ― | ― | Strong | ― | Strong |
| Fat Saturation | Strong | ― | ― | ― | ― | Strong | ― | Strong |
| Gradient Mode | Fast | Fast | Normal | Normal | Normal | Fast | Normal | Fast |
| RF Pulse Type | Normal | Fast | Normal | Fast | Normal | Normal | Normal | Normal |
| Asymmetric Echo | ― | Off | ― | Allowed | ― | ― | ― | ― |
Acquisition Parameters
| Scan Description | AXIAL DWI |
AXIAL GRE |
AXIAL T2 |
CORONAL T2 Temporal Lobe |
CORONAL T1 MPRAGE |
CORONAL FLAIR SPACE |
Post CORONAL FLAIR SPACE |
Post CORONAL T1 SPACE |
|---|---|---|---|---|---|---|---|---|
| Base Resolution | 128 | 320 | 384 | 256 | 384 | 256 | 256 | 256 |
| Phase Resolution | 100% | 75% | 100% | 100% | 100% | 100% | 100% | 100% |
| Slice Resolution | ― | ― | ― | 100% | ― | 79% | 91% | 79% |
| Averages | ― | 1 | 2 | 1 | 1 | 1.6 | 1.6 | 1 |
| Averaging Mode | ― | ― | ― | ― | ― | ― | ― | ― |
| Concatenations | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 1 |
| b-value | 0 s/mm2 1000 s/mm2 |
― | ― | ― | ― | ― | ― | ― |
| FoV Read | 220 mm | 220 mm | 180 mm | 230 mm | 220 mm | 230 mm | 230 mm | 230 mm |
| FoV Phase | 100% | 84% | 100% | 100% | 85% | 100% | 100% | 100% |
| Phase Encoding Dir. | A >> P | R >> L | R >> L | R >> L | R >> L | R >> L | R >> L | R >> L |
| Phase Oversampling | 0% | 0% | 60% | 10% | 60% | 10% | 10% | 0% |
| Slice Oversampling | ― | ― | ― | 27% | ― | 9% | 9% | 27% |
| Phase Partial Fourier | 6/8 | Off | Off | Off | Off | Off | Off | Off |
| Slice Partial Fourier | ― | ― | ― | Off | ― | Off | Off | Off |
| Flow Compensation | ― | Slice/Read | None | None | None | None | None | None |
Scanning Range
| Scan Description | AXIAL DWI |
AXIAL GRE |
AXIAL T2 |
CORONAL T2 Temporal Lobe |
CORONAL T1 MPRAGE |
CORONAL FLAIR SPACE |
Post CORONAL FLAIR SPACE |
Post CORONAL T1 SPACE |
|---|---|---|---|---|---|---|---|---|
| Elliptical Filter | Off | On | Off | Off | Off | Off | Off | Off |
| Image Filter | ― | Off | Off | Off | Off | Off | Off | Off |
| Normalize | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan |
| Distortion Correction | Off | 2D | 2D | 2D | 2D | 3D | 2D | 3D |
| Distance Factor | 0% | 0% | 0% | 50% | 0% | ― | ― | ― |
| Slice Thickness | 5.0 mm | 5.0 mm | 3.0 mm | 1.0 mm | 5.0 mm | 1.0 mm | 1.0 mm | 1.0 mm |
| Slices | 30 Slices | 30 Slices | 36 Slices | 176 Slices per Slab | 30 Slices | 176 Slices per Slab | 176 Slices per Slab | 176 Slices per Slab |
| Acquisition Time | 1:09 min | 1:20 min | 2:25 min | 5:38 min | 1:04 min | 4:45 min | 4:40 min | 4:45 min |