MR Venography (MRV) Abdomen Pelvis 1.5T
Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols
Instructions And Patient Preparation
- Instructions
- • Establish clear communication with the patient prior to the procedure regarding breath hold instructions
• Position arms close by the side to minimize the required field of view in the right-left direction - Common Indications
- May-Thurner syndrome, vein occlusion, stenosis, blockage, vasculitis
- Position
- Supine, head first
- Coil
- Body Array Coil (two in tandem if available)
- Landmark
- Mid-thorax
Contrast Agent Parameters
| Contrast Agents | Dose | Injection Rate | Dose Timing Method and Scan Delay | ||||
|---|---|---|---|---|---|---|---|
| Gadopiclenol (VUEWAY) | 0.05 mmol/kg | 1.5 mL/sec | Fluoro trigger to peak arterial opacification of entire aorta | ||||
| Saline Flush | 20 mL | 1.5 mL/sec | Immediately following gadolinium | ||||
| 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 | AXIAL T2 HASTE |
AXIAL T2 TRUFISP |
Pre AXIAL VIBE |
Post AXIAL VIBE 30 sec |
Post AXIAL VIBE 60 sec |
Post AXIAL VIBE 90 sec |
Post AXIAL VIBE 180 sec |
|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | View Image | |
| Sequence Name | h | tfi | fl | fl | fl | fl | fl |
| Dimension | 2D | 2D | 3D | 3D | 3D | 3D | 3D |
| Acceleration mode | GRAPPA | GRAPPA | CAIPIRINHA | CAIPIRINHA | CAIPIRINHA | CAIPIRINHA | CAIPIRINHA |
| CAIPIRINHA Mode | ― | ― | Body Tra | Body Tra | Body Tra | Body Tra | Body Tra |
| Total Factor | ― | ― | 4 | 4 | 4 | 4 | 4 |
| Acceleration Factor PE | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Acceleration Factor 3D | ― | ― | 2 | 2 | 2 | 2 | 2 |
Scan Parameters
| Scan Description | AXIAL T2 HASTE |
AXIAL T2 TRUFISP |
Pre AXIAL VIBE |
Post AXIAL VIBE 30 sec |
Post AXIAL VIBE 60 sec |
Post AXIAL VIBE 90 sec |
Post AXIAL VIBE 180 sec |
|---|---|---|---|---|---|---|---|
| TR | 1300.0 ms | 3.8 ms | 4.3 ms | 4.3 ms | 4.3 ms | 4.3 ms | 4.3 ms |
| TE | 203.00 ms | 1.92 ms | 2.12 ms | 2.12 ms | 2.12 ms | 2.12 ms | 2.12 ms |
| Flip Angle | 180 deg | 90 deg | 10 deg | 10 deg | 10 deg | 10 deg | 10 deg |
| Turbo Factor | 198 | Off | Off | Off | Off | Off | Off |
| Bandwidth | 698 Hz/Px | 501 Hz/Px | 390 Hz/Px | 390 Hz/Px | 390 Hz/Px | 390 Hz/Px | 390 Hz/Px |
| Fat-Water Contrast | Standard | Standard | Fast Fat Saturation | Fast Fat Saturation | Fast Fat Saturation | Fast Fat Saturation | Fast Fat Saturation |
| Gradient Mode | Fast | Fast | Fast | Fast | Fast | Fast | Fast |
| RF Pulse Type | Fast | Normal | Fast | Fast | Fast | Fast | Fast |
| Asymmetric Echo | ― | Off | Off | Off | Off | Off | Off |
Acquisition Parameters
| Scan Description | AXIAL T2 HASTE |
AXIAL T2 TRUFISP |
Pre AXIAL VIBE |
Post AXIAL VIBE 30 sec |
Post AXIAL VIBE 60 sec |
Post AXIAL VIBE 90 sec |
Post AXIAL VIBE 180 sec |
|---|---|---|---|---|---|---|---|
| Base Resolution | 256 | 256 | 256 | 256 | 256 | 256 | 256 |
| Phase Resolution | 95% | 100% | 75% | 75% | 75% | 75% | 75% |
| Slice Resolution | ― | ― | 50% | 50% | 50% | 50% | 50% |
| Averages | 1 | 2 | 1 | 1 | 1 | 1 | 1 |
| Concatenations | 3 | ― | 1 | 1 | 1 | 1 | 1 |
| FoV Read | 380 mm | 380 mm | 380 mm | 380 mm | 380 mm | 380 mm | 380 mm |
| FoV Phase | 81% | 81% | 91% | 91% | 91% | 91% | 91% |
| Phase Encoding Dir. | A >> P | A >> P | A >> P | A >> P | A >> P | A >> P | A >> P |
| Phase Oversampling | 0% | 0% | 10% | 10% | 10% | 10% | 10% |
| Slice Oversampling | ― | ― | 25% | 25% | 25% | 25% | 25% |
| Phase Partial Fourier | Off | Off | Off | Off | Off | Off | Off |
| Slice Partial Fourier | ― | ― | 6/8 | 6/8 | 6/8 | 6/8 | 6/8 |
| Flow Compensation | None | None | ― | ― | ― | ― | ― |
Scanning Range
| Scan Description | AXIAL T2 HASTE |
AXIAL T2 TRUFISP |
Pre AXIAL VIBE |
Post AXIAL VIBE 30 sec |
Post AXIAL VIBE 60 sec |
Post AXIAL VIBE 90 sec |
Post AXIAL VIBE 180 sec |
|---|---|---|---|---|---|---|---|
| Raw Filter | Off | Off | Off | Off | Off | Off | Off |
| Elliptical Filter | Off | Off | Off | Off | Off | Off | Off |
| Distortion Correction | 2D | 2D | 2D | 2D | 2D | 2D | 2D |
| Normalize | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan |
| Image Filter | Off | Off | Off | Off | Off | Off | Off |
| Distance Factor | 20% | 20% | 20% | 20% | 20% | 20% | 20% |
| Slice Thickness | 6.0 mm | 4.0 mm | 3.5 mm | 3.5 mm | 3.5 mm | 3.5 mm | 3.5 mm |
| Slices | 40 Slices | 30 Slices | 96 Slices per Slab | 96 Slices per Slab | 96 Slices per Slab | 96 Slices per Slab | 96 Slices per Slab |
| Time of Acquisition | 54 sec | 42 sec | 14 sec | 14 sec | 14 sec | 14 sec | 14 sec |