Internal Auditory Canals 3T
Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols
Instructions And Patient Preparation
- Instructions
- • This may be a standalone exam for follow-up or done in conjunction with sequences from Routine Adult Brain protocol
• Contrast is used for almost all examinations
• Can do noncontrast as screening study - 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 | • Report agent administered and dose • Use minimal dose for patients with a GFR <60 mL/sec |
||||||||||
Imaging Parameters
| Scan Description | AXIAL DWI |
SAGITTAL T1 |
AXIAL T2 3MM |
AXIAL GRE |
Pre CORONAL T1 |
AXIAL BLADE DWI |
AXIAL FLAIR |
Post CORONAL T1 Fat Sat |
Post AXIAL T1 Fat Sat |
AXIAL T2 SPACE/CISS |
Post AXIAL T1 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | |
| Sequence Name | epse | tir | tseB | fl_r | tse_rs | resolve | tirB | tse_rs | tse_rs | ci | tirB |
| Mode | ― | 2D | 2D | 2D | 2D | Off | 2D | 2D | 2D | 2D | 2D |
| PAT Mode | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA | ― | GRAPPA |
| Acceleration Factor PE | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | ― | 2 |
| AutoAlign | Head > Brain | Head > Brain | Head > Brain | Head > Brain | Head > IAC | Head > Brain | Head > Brain | Head > IAC | Head > Brain | Head > Brain | Head > Brain |
Scan Parameters
| Scan Description | AXIAL DWI |
SAGITTAL T1 |
AXIAL T2 3MM |
AXIAL GRE |
Pre CORONAL T1 |
AXIAL BLADE DWI |
AXIAL FLAIR |
Post CORONAL T1 Fat Sat |
Post AXIAL T1 Fat Sat |
AXIAL T2 SPACE/CISS |
Post AXIAL T1 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TR | 4100 ms | 1800.0 ms | 4500.0 ms | 743.0 ms | 500.0 ms | 6060 ms | 8000.0 ms | 600.0 ms | 600.0 ms | 8.08 ms | 2020.0 ms |
| TE | 95.0 ms | 9 ms | 117 ms | 19.90 ms | 9.8 ms | TE 1: 66 ms TE 2: 108 ms |
98 ms | 9.8 ms | 9.8 ms | 3.67 ms | TE 1: 44 ms TE 2: 868 ms |
| TI | ― | 818 ms | ― | ― | ― | ― | 2370 ms | ― | ― | ― | ― |
| Flip Angle | ― | 150 deg | 140 deg | 20 deg | 150 deg | 180 deg | 150 deg | 150 deg | 150 deg | 50 deg | 70 deg |
| Turbo Factor | ― | 4 | 24 | ― | 3 | ― | 28 | 3 | 3 | ― | 9 |
| Bandwidth | 1562 Hz/Px | 260 Hz/Px | 363 Hz/Px | 220 Hz/Px | 362 Hz/Px | 651 Hz/Px | 363 Hz/Px | 362 Hz/Px | 362 Hz/Px | 460 Hz/Px | 362 Hz/Px |
| EPI Factor | 128 | ― | ― | ― | ― | 96 | ― | ― | ― | ― | ― |
| Fat Saturation Mode | Weak | ― | ― | ― | ― | Strong | Strong | Strong | Strong | ― | ― |
| Fat Suppression | Fat sat. | None | None | None | None | Fat sat. | Fat sat. | Fat sat. | Fat sat. | None | None |
| Water Suppression | ― | None | None | None | None | ― | None | None | None | ― | None |
| Gradient Mode | Fast* | Fast | Fast | Fast | Fast | Fast | Fast | Fast | Fast | Fast | Fast |
| RF Pulse Type | Normal | Normal | Normal | Fast | Fast | Normal | Fast | Fast | Fast | Low SAR | Low SAR |
| Asymmetric Echo | ― | ― | ― | Off | ― | ― | ― | ― | ― | Allowed | ― |
Acquisition Parameters
| Scan Description | AXIAL DWI |
SAGITTAL T1 |
AXIAL T2 3MM |
AXIAL GRE |
Pre CORONAL T1 |
AXIAL BLADE DWI |
AXIAL FLAIR |
Post CORONAL T1 Fat Sat |
Post AXIAL T1 Fat Sat |
AXIAL T2 SPACE/CISS |
Post AXIAL T1 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Base Resolution | 128 | 320 | 320 | 320 | 256 | 192 | 320 | 256 | 256 | 320 | 256 |
| Phase Resolution | 100% | ― | ― | 75% | 80% | 100% | ― | 80% | 80% | 96% | ― |
| Slice Resolution | ― | ― | ― | ― | ― | ― | ― | ― | ― | 81% | ― |
| Averages | 1 | 1 | 1 | 1 | 3 | ― | 1 | 3 | 3 | 1 | 1 |
| Averaging Mode | Long term | Long term | Short term | Long term | Long term | Short term | Short term | Long term | Long term | Short term | Short term |
| Concatenations | 1 | 2 | 3 | 1 | 1 | 1 | 2 | 2 | 2 | ― | 3 |
| b-value | 0 s/mm2 0 s/mm2 1000 s/mm2 |
― | ― | ― | ― | 0 s/mm2 0 s/mm2 1000 s/mm2 |
― | ― | 0 s/mm2 0 s/mm2 1000 s/mm2 |
― | ― |
| FoV Read | 220 mm | 220 mm | 220 mm | 220 mm | 160 mm | 220 mm | 230 mm | 160 mm | 160 mm | 180 mm | 220 mm |
| FoV Phase | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% |
| Phase Encoding Dir. | A >> P | A >> P | R >> L | A >> P | R >> L | A >> P | R >> L | R >> L | R >> L | R >> L | R >> L |
| Phase Oversampling | 0% | 0% | 0% | 0% | 75% | ― | 0% | ― | 75% | 0% | ― |
| Slice Oversampling | ― | ― | ― | ― | ― | ― | ― | 75% | ― | 39% | 0% |
| Phase Partial Fourier | 6/8 | Off | ― | Off | Off | Off | ― | Off | Off | Off | ― |
| Slice Partial Fourier | ― | ― | ― | ― | ― | ― | ― | ― | ― | 7/8 | No |
| Flow Compensation | ― | ― | ― | ― | Slice | ― | ― | ― | Slice | No | ― |
Scanning Range
| Scan Description | AXIAL DWI |
SAGITTAL T1 |
AXIAL T2 3MM |
AXIAL GRE |
Pre CORONAL T1 |
AXIAL BLADE DWI |
AXIAL FLAIR |
Post CORONAL T1 Fat Sat |
Post AXIAL T1 Fat Sat |
AXIAL T2 SPACE/CISS |
Post AXIAL T1 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Elliptical Filter | Off | On | Off | On | On | ― | Off | On | On | On | Off |
| Filter | Prescan Normalize | Distortion Corr.(2D), Prescan Normalize, Elliptical filter | Distortion Corr.(2D), Prescan Normalize | Distortion Corr.(2D), Prescan Normalize, Elliptical filter | Distortion Corr.(2D), Prescan Normalize, Elliptical filter | Raw filter, Prescan Normalize | Distortion Corr.(2D), Prescan Normalize | Distortion Corr.(2D), Prescan Normalize, Elliptical filter | Distortion Corr.(2D), Prescan Normalize, Elliptical filter | Distortion Corr.(2D), Prescan Normalize, Elliptical filter | Distortion Corr.(2D), Prescan Normalize, Image Filter |
| Normalize | ― | Off | Off | Off | Off | ― | Off | Off | Off | Off | Off |
| Prescan Normalize | On | On | On | On | On | On | On | On | On | On | On |
| Distance Factor | 0% | 30% | 0% | 0% | 20% | 0% | 0% | 20% | 20% | 20% | 0% |
| Distortion Correction | Off | On | On | On | On | Off | On | On | On | On | On |
| Slice Thickness | 5.0 mm | 5.0 mm | 3.0 mm | 5.0 mm | 2.0 mm | 3.0 mm | 5.0 mm | 2.0 mm | 2.0 mm | 0.7 mm | 5.0 mm |
| Slices | 30 Slices | 25 Slices | 55 Slices | 30 Slices | 13 Slices | 30 Slices | 30 Slices | 13 Slices | 13 Slices | 52 Slices per Slab |
30 Slices |
| Acquisition Time | 43 sec | 1:57 min | 3:38 min | 1:40 min | 1:32 min | 3:21 min | 3:14 min | 3:40 min | 3:40 min | 4:06 min | 4:10 min |