Internal Auditory Canals 1.5T
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_rr | resolve | tirB | tse_rr | tse_rr | ci | tir |
| Dimension | ― | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 3D | 2D |
| Acceleration Mode | GRAPPA | GRAPPA | GRAPPA | None | GRAPPA | GRAPPA | GRAPPA | GRAPPA | GRAPPA | ― | GRAPPA |
| Acceleration Factor PE | 2 | 2 | ― | ― | 2 | 2 | 2 | 2 | 2 | ― | 2 |
| Acceleration Factor 3D | ― | ― | 2 | ― | ― | ― | ― | ― | ― | ― | ― |
| AutoAlign | Head > Brain | Head > Basis | Head > Brain | Head > Brain | Head > IAC | Head > IAC | Head > Brain | Head > IAC | Head > IAC | Head > IAC | Head > Brain |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TR | 4900.0 ms | 1490.0 ms | 5900.0 ms | 858.0 ms | 640.0 ms | 6440.0 ms | 8000.0 ms | 510.0 ms | 510.0 ms | 6.2 ms | 1800.0 ms |
| TE | 98.00 ms | 7.50 ms | 105.00 ms | 23.90 ms | 11.00 ms | TE 1: 66 ms TE 2: 103 ms |
TE 1: 109.00 ms TE 2: 2370 ms |
11.00 ms | 11.00 ms | 2.81 ms | TE 1: 7.50 ms TE 2: 818 ms |
| TI | ― | 688 ms | ― | ― | ― | ― | ― | ― | ― | ― | ― |
| Flip Angle | ― | 150 deg | 150 deg | 20 deg | 160 deg | 180 deg | 150 deg | 160 deg | 160 deg | 62 deg | 150 deg |
| Turbo Factor | ― | 6 | 23 | ― | 3 | ― | 33 | 3 | 3 | ― | 6 |
| Bandwidth | 1184 Hz/Px | 240 Hz/Px | 363 Hz/Px | 200 Hz/Px | 190 Hz/Px | 694 Hz/Px | 363 Hz/Px | 190 Hz/Px | 190 Hz/Px | 454 Hz/Px | 240 Hz/Px |
| Echo Spacing | 1.04 ms | 7.46 ms | 8.72 ms | ― | 11.0 ms | 0.38 ms | 6.42 ms | 11.0 ms | 11.0 ms | ― | 7.46 ms |
| Echo Trains per Slice | ― | 25 | 17 | ― | 41 | ― | 12 | 41 | 41 | ― | 16 |
| EPI Factor | 128 | ― | ― | ― | ― | 75 | ― | ― | ― | ― | ― |
| Fat-Water Contrast | Fat Saturation | Standard | Standard | Standard | Standard | Fat Saturation | Standard | Fat Saturation | Fat Saturation | Standard | Standard |
| Fat Saturation | Weak | ― | ― | ― | ― | Strong | ― | Strong | Strong | ― | ― |
| Gradient Mode | Fast | Fast | Fast | Fast | Normal | Fast | Fast | Normal | Normal | Fast | Fast |
| RF Pulse Type | Normal | Fast | Normal | Fast | Normal | Normal | Fast | Normal | Normal | Normal | Fast |
| Asymmetric Echo | ― | ― | ― | Off | ― | ― | ― | ― | ― | Allowed | ― |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Base Resolution | 128 | 320 | 320 | 288 | 256 | 150 | 320 | 256 | 256 | 256 | 320 |
| Phase Resolution | 100% | 70% | ― | 75% | 80% | 100% | ― | 80% | 80% | 100% | 70% |
| Slice Resolution | ― | ― | ― | ― | ― | ― | ― | ― | ― | 100% | ― |
| Averages | ― | 1 | 1 | 1 | 3 | ― | 1 | 3 | 3 | 1 | 2 |
| Concatenations | 1 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | ― | 2 |
| b-value | 0 s/mm2 1000 s/mm2 |
― | ― | ― | ― | 0 s/mm2 1000 s/mm2 |
― | ― | ― | ― | ― |
| FoV Read | 220 mm | 220 mm | 220 mm | 210 mm | 180 mm | 220 mm | 230 mm | 180 mm | 180 mm | 180 mm | 220 mm |
| FoV Phase | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 81% |
| 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 |
| Slice Oversampling | ― | ― | ― | ― | ― | ― | ― | ― | ― | 39% | ― |
| Phase Oversampling | 0% | 20% | 25% | 0% | 20% | 0% | 38% | 20% | 20% | 25% | 0% |
| Slice Partial Fourier | ― | ― | ― | ― | ― | ― | ― | ― | ― | Off | ― |
| Phase Partial Fourier | 6/8 | Off | ― | Off | Off | Off | ― | Off | Off | Off | Off |
| Flow Compensation | ― | None | None | On | Read | ― | None | Read | Read | None | None |
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 | On |
| Normalize | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan |
| Distortion Correction | Off | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D |
| Distance Factor | 0% | 30% | 0% | 0% | 10% | 0% | 0% | 10% | 10% | 20% | 30% |
| 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 | 15 Slices | 20 Slices | 30 Slices | 15 Slices | 15 Slices | 52 Slices per Slab |
24 Slices |
| Acquisition Time | 51 sec | 1:19 min | 3:34 min | 3:07 min | 1:21 min | 3:34 min | 3:30 min | 2:09 min | 2:09 min | 3:45 min | 2:00 min |