Liver 3T
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
- Head or Feet first; Supine
- 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 CareBolus (CB) to track contrast to diaphragm; stop CB; perform breath hold (BH) command (~6 sec); start Arterial-phase acquisition |
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| Saline Flush | 20 mL | 2 mL/sec | — | |||||||
| Comments | • Report agent administered and dose • Use minimal dose for patients with a GFR <30 mL/sec |
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Imaging Parameters
| Scan Description | LOCALIZER BH |
CORONAL T2 HASTE |
AXIAL 3D In-Out- of-Phase |
AXIAL DWI |
AXIAL VIBE Pre CAIPI |
Care Bolus | AXIAL VIBE Post CAIPI Double Arterial |
AXIAL VIBE Post CAIPI 60 sec 180 sec |
CORONAL T1 VIBE Post 180 sec |
AXIAL T2 Fat Sat |
|---|---|---|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | View Image | ||||
| Sequence Name | fl | h | fl | epse | fl | fl | fl | fl | fl | tse |
| Dimension | 2D | 2D | 3D | — | 3D | 2D | 3D | 3D | 3D | 2D |
| Acceleration mode | GRAPPA | GRAPPA | CAIPIRINHA | SMS | CAIPIRINHA | None | CAIPIRINHA | CAIPIRINHA | CAIPIRINHA | GRAPPA |
| Acceleration Factor PE | 2 | 3 | 2 | 2 | 2 | — | 2 | 2 | 2 | 2 |
| Acceleration Factor 3D | — | — | 2 | — | 2 | — | 2 | 2 | 2 | — |
Scan Parameters
| Scan Description | LOCALIZER BH |
CORONAL T2 HASTE |
AXIAL 3D In-Out- of-Phase |
AXIAL DWI |
AXIAL VIBE Pre CAIPI |
Care Bolus | AXIAL VIBE Post CAIPI Double Arterial |
AXIAL VIBE Post CAIPI 60 sec 180 sec |
CORONAL T1 VIBE Post 180 sec |
AXIAL T2 Fat Sat |
|---|---|---|---|---|---|---|---|---|---|---|
| TR | 7.8 ms | 1400 ms | 4.6 ms | 3000 ms | 2.8 ms | 68.77 ms | 2.8 ms | 2.8 ms | 4.6 ms | 2630 ms |
| TE | 3.69 ms | 87 ms | 1: 1.23 ms 2: 2.46 ms |
60 ms | 1.12 ms | 1.52 ms | 1.12 ms | 1.12 ms | 2.20 ms | 82 ms |
| Flip Angle | 20 deg | 160 deg | 9 deg | — | 10 deg | 30 deg | 10 deg | 10 deg | 10 deg | 120 deg |
| Turbo Factor | — | 256 | — | — | — | — | — | — | — | 19 |
| Bandwidth | 320 Hz/Px | 698 Hz/Px | 1200 Hz/Px | 2084 Hz/Px | 690 Hz/Px | 400 Hz/Px | 690 Hz/Px | 690 Hz/Px | 350 Hz/Px | 195 Hz/Px |
| Fat-Water Contrast | Standard | Standard | Dixon | SPAIR | Fast Fat Saturation | Standard | Fast Fat Saturation | Fast Fat Saturation | Fast Fat Saturation | SPAIR |
| Fat Saturation | — | — | — | Strong | — | — | — | — | — | Strong |
| Gradient Mode | Normal | Fast | Fast | Fast | Fast | Fast | Fast | Fast | Fast | Normal |
| RF Pulse Type | Normal | Fast | Fast | Low SAR | Fast | Low SAR | Fast | Fast | Fast | Normal |
| Asymmetric Echo | Allowed | — | Off | — | Weak | Allowed | Weak | Weak | Off | — |
Acquisition Parameters
| Scan Description | LOCALIZER BH |
CORONAL T2 HASTE |
AXIAL 3D In-Out- of-Phase |
AXIAL DWI |
AXIAL VIBE Pre CAIPI |
Care Bolus | AXIAL VIBE Post CAIPI Double Arterial |
AXIAL VIBE Post CAIPI 60 sec 180 sec |
CORONAL T1 VIBE Post 180 sec |
AXIAL T2 Fat Sat |
|---|---|---|---|---|---|---|---|---|---|---|
| Base Resolution | 256 | 256 | 320 | 160 | 288 | 192 | 288 | 288 | 320 | 256 |
| Phase Resolution | 60% | 100% | 75% | 100% | 80% | 77% | 80% | 80% | 75% | 69% |
| Slice Resolution | — | — | 57% | — | 50% | — | 50% | 50% | 50% | — |
| Averages | 1 | 1 | 1 | 3 | 1 | — | 1 | 1 | — | 1 |
| Concatenations | 26 | 2 | 1 | 1 | 1 | — | 1 | 1 | 1 | 4 |
| b-value >= | — | — | — | 0 s/mm2 50 s/mm2 800 s/mm2 |
— | — | — | — | — | — |
| FoV Read | 430 mm | 400 mm | 400 mm | 380 mm | 340 mm | 350 mm | 340 mm | 340 mm | 400 mm | 350 mm |
| FoV Phase | 100% | 100% | 75% | 80% | 81% | 100% | 81% | 81% | 81% | 75% |
| Phase Encoding Dir. | A >> P | R >> L | A >> P | A >> P | A >> P | A >> P | A >> P | A >> P | R >> L | A >> P |
| Slice Oversampling | — | — | 36% | — | 30% | — | 30% | 30% | — | — |
| Phase Partial Fourier | 6/8 | 5/8 | Off | Off | Off | 7/8 | Off | Off | Off | Allowed |
| Slice Partial Fourier | — | — | 7/8 | 7/8 | — | 7/8 | 7/8 | 6/8 | — | |
| Flow Compensation | None | None | — | — | — | — | — | — | — | None |
Scanning Range
| Scan Description | LOCALIZER BH |
CORONAL T2 HASTE |
AXIAL 3D In-Out- of-Phase |
AXIAL DWI |
AXIAL VIBE Pre CAIPI |
Care Bolus | AXIAL VIBE Post CAIPI Double Arterial |
AXIAL VIBE Post CAIPI 60 sec 180 sec |
CORONAL T1 VIBE Post 180 sec |
AXIAL T2 Fat Sat |
|---|---|---|---|---|---|---|---|---|---|---|
| Elliptical Filter | On | Off | Off | Off | Off | Off | Off | Off | Off | Off |
| Normalize | Prescan | Prescan | Prescan | Prescan | Prescan | Off | Prescan | Prescan | Prescan | Prescan |
| Distortion Correction | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D |
| Slice Thickness | 7.0 mm | 6.0 mm | 3.0 mm | 7.0 mm | 3.0 mm | 20.0 mm | 3.0 mm | 3.0 mm | 3.0 mm | 6.0 mm |
| Distance Factor | 150% | 20% | 20% | 0% | 20% | 20% | 20% | 20% | 20% | 20% |
| Slices | 10 Slices | 34 Slices | 88 Slices | 36 Slices | 80 Slices per Slab |
1 Slice | 80 Slices per Slab |
80 Slices per Slab |
72 Slices per Slab |
38 Slices |
| Time of Acquisition | 19 sec | 54 sec | 18 sec | 1:51 min | 13 sec | 1:16 min | 22 sec | 13 sec | 17 sec | 1:26 min |