Liver 1.5T
Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols
Instructions And Patient Preparation
- Instructions
- • NPO 4 hours
• Cover entire liver - Common Indications
- Characterization or follow up liver mass, patients with malignancy, abdominal pain, infection
- Position
- Supine; head or feet first
- Coil
- Body Array (anterior); Spine Array (posterior) – Be sure ISO, AUTO-COIl SELECT is on
- Landmark
- Xyphoid. Center in the middle of Body Array coil. Table can be re-centered following the localizer
Contrast Agent Parameters
| Contrast Agent | Dose | Injection Rate | Dose Timing Method and Scan Delay | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Gadopiclenol (VUEWAY) | 0.05 mmol/kg | 2 mL/sec | Use Care Bolus (CB) to track contrast to diaphragm; stop CB; perform breath hold (BH) command (~6 sec); start Arterial phase acquisition | |||||||
| Saline Flush | 20 mL | 2 mL/sec | — | |||||||
| Comments | • Report agent administered and dose • Use minimal dose for patients with a GFR <30 mL/sec |
|||||||||
Imaging Parameters
| Scan Description | LOCALIZER | CORONAL T2 HASTE |
AXIAL T2 HASTE |
AXIAL 3D IN OUT CAIPI |
AXIAL T1 VIBE Pre CAIPI |
Care Bolus | AXIAL T1 VIBE Post CAIPI Double Arterial |
AXIAL T1 VIBE Post CAIPI 60 sec 180 sec |
CORONAL T1 VIBE Fat Sat 180 sec |
AXIAL DWI Bipolar |
|---|---|---|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | ||
| Sequence Name | fl | h_rr | h | fl | fl | fl | fl | fl | fl | epse |
| Dimension | 2D | 2D | 2D | 3D | 3D | 2D | 3D | 3D | 3D | — |
| Acceleration Mode | GRAPPA | GRAPPA | GRAPPA | CAIPIRINHA | CAIPIRINHA | None | CAIPIRINHA | CAIPIRINHA | CAIPIRINHA | GRAPPA |
| Acceleration Factor PE | 2 | 3 | 2 | 2 | 2 | — | 2 | 2 | 2 | 2 |
Scan Parameters
| Scan Description | LOCALIZER | CORONAL T2 HASTE |
AXIAL T2 HASTE |
AXIAL 3D IN OUT CAIPI |
AXIAL T1 VIBE Pre CAIPI |
Care Bolus | AXIAL T1 VIBE Post CAIPI Double Arterial |
AXIAL T1 VIBE Post CAIPI 60 sec 180 sec |
CORONAL T1 VIBE Fat Sat 180 sec |
AXIAL DWI Bipolar |
|---|---|---|---|---|---|---|---|---|---|---|
| TR | 7.4 ms | 1100.0 ms | 1100.0 ms | 6.8 ms | 4.2 ms | 60.51 ms | 4.2 ms | 4.2 ms | 4.9 ms | 6700.0 ms |
| TE | 3.69 ms | 101 ms | 98 ms | 1: 2.39 ms 2: 4.77 ms |
1.81 ms | 1.45 ms | 1.81 ms | 1.81 ms | 2.41 ms | 76 ms |
| Flip Angle | 20 deg | 180 deg | 180 deg | 10 deg | 10 deg | 30 deg | 10 deg | 10 deg | 10 deg | — |
| Turbo Factor | — | 288 | 234 | — | — | — | — | — | — | — |
| Bandwidth | 400 Hz/Px | 601 Hz/Px | 579 Hz/Px | 510 Hz/Px | 540 Hz/Px | 400 Hz/Px | 540 Hz/Px | 540 Hz/Px | 350 Hz/Px | 1358 Hz/Px |
| Fat-Water Contrast | Standard | Standard | Standard | Dixon | Fast Fat Saturation | Standard | Fast Fat Saturation | Fast Fat Saturation | Fast Fat Saturation | SPAIR |
| Fat Saturation | — | — | — | — | — | — | — | — | — | Strong |
| Saturation Mode | Standard | — | — | — | — | — | — | — | — | — |
| Gradient Mode | Normal | Fast | Fast | Bipolar | Fast | — | Fast | Fast | Fast | Fast |
| RF Pulse Type | Normal | Fast | Fast | Fast | Fast | Low SAR | Fast | Fast | Fast | Normal |
| Asymmetric Echo | Allowed | — | — | Strong | Off | Allowed | Off | Off | Off | — |
Acquisition Parameters
| Scan Description | LOCALIZER | CORONAL T2 HASTE |
AXIAL T2 HASTE |
AXIAL 3D IN OUT CAIPI |
AXIAL T1 VIBE Pre CAIPI |
Care Bolus | AXIAL T1 VIBE Post CAIPI Double Arterial |
AXIAL T1 VIBE Post CAIPI 60 sec 180 sec |
CORONAL T1 VIBE Fat Sat 180 sec |
AXIAL DWI Bipolar |
|---|---|---|---|---|---|---|---|---|---|---|
| Base Resolution | 256 | 320 | 320 | 288 | 256 | 192 | 256 | 256 | 320 | 160 |
| Phase Resolution | 60% | 90% | 90% | 80% | 70% | 74% | 70% | 70% | 75% | 100% |
| Slice Resolution | — | — | — | 60% | 50% | — | 50% | 50% | 50% | — |
| Averages | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1, 3 |
| Concatenations | 27 | 2 | 2 | 1 | 1 | — | 1 | 1 | 1 | 1 |
| b-value | — | — | — | — | — | — | — | — | — | 0 s/mm2 50 s/mm2 800 s/mm2 |
| FoV Read | 430 mm | 380 mm | 380 mm | 380 mm | 380 mm | 350 mm | 380 mm | 380 mm | 380 mm | 380 mm |
| FoV Phase | 100% | 100% | 81% | 83% | 91% | 100% | 91% | 91% | 81% | 80% |
| Phase Encoding Dir. | A >> P | R >> L | A >> P | A >> P | A >> P | A >> P | A >> P | A >> P | R >> L | A >> P |
| Phase Oversampling | 25% | 50% | 0% | 25% | 20% | 0% | 20% | 20% | 50% | 0% |
| Slice Oversampling | — | — | — | 33% | 33% | — | 33% | 33% | 57% | — |
| Phase Partial Fourier | 6/8 | 5/8 | 6/8 | 6/8 | Off | 7/8 | Off | Off | Off | 6/8 |
| Slice Partial Fourier | — | — | — | 6/8 | 6/8 | — | 6/8 | 6/8 | 6/8 | — |
| Flow Compensation | None | Read | None | Fast | — | Fast | — | — | — | — |
Scanning Range
| Scan Description | LOCALIZER | CORONAL T2 HASTE |
AXIAL T2 HASTE |
AXIAL 3D IN OUT CAIPI |
AXIAL T1 VIBE Pre CAIPI |
Care Bolus | AXIAL T1 VIBE Post CAIPI Double Arterial |
AXIAL T1 VIBE Post CAIPI 60 sec 180 sec |
CORONAL T1 VIBE Fat Sat 180 sec |
AXIAL DWI Bipolar |
|---|---|---|---|---|---|---|---|---|---|---|
| Elliptical Filter | On | Off | Off | Off | Off | Off | Off | Off | Off | Off |
| Normalize | Prescan | Prescan | Prescan | Prescan | Prescan | Off | Prescan | Prescan | Prescan | Off |
| Raw Filter | Off | Off | Off | Off | Off | Off | Off | Off | Off | Off |
| Distortion Correction | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D |
| Slice Thickness | 7.0 mm | 6.0 mm | 6.0 mm | 3.0 mm | 3.0 mm | 20.0 mm | 3.0 mm | 3.0 mm | 3.0 mm | 7.0 mm |
| Distance Factor | 150% | 20% | 20% | 20% | 20% | 20% | 20% | 20% | 20% | 20% |
| Slices | Slices 10 | Slices 35 | Slices 32 | Slices per Slab 72 | Slices per Slab 72 | Slices 1 | Slices per Slab 72 | Slices per Slab 72 | Slices per Slab 56 | Slices 32 |
| Time of Acquisition | 18 sec | 49 sec | 43 sec | 16 sec | 11 sec | 1:01 min | 20 sec | 11 sec each | 17 sec | 1:42 min |