Chest MRA 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
- Thoracic aortic aneurysm, dissection, embolism
- Position
- Supine, head first
- Coil
- Body Array Coil (two in tandem if available)
- Landmark
- Mid-chest
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 thoracic 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 | CORONAL HASTE |
AXIAL HASTE |
AXIAL IN/OUT |
Pre CORONAL VIBE |
Pre AXIAL VIBE |
Pre CORONAL Angio |
Dynamic CARE BOLUS CORONAL |
Post CORONAL Angio |
Post AXIAL VIBE 60 sec |
Post AXIAL VIBE 180 sec |
Post CORONAL VIBE 180 sec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | View Image | |
| Sequence Name | h | h | fl | fl | fl | fl | fl | fl | fl | fl | fl |
| Dimension | 2D | 2D | 3D | 3D | 3D | 3D | 2D | 3D | 3D | 3D | 3D |
| Acceleration mode | GRAPPA | GRAPPA | CAIPIRINHA | CAIPIRINHA | CAIPIRINHA | GRAPPA | None | GRAPPA | CAIPIRINHA | CAIPIRINHA | CAIPIRINHA |
| CAIPIRINHA Mode | ― | ― | Body Tra | Body Cor | Body Tra | ― | ― | ― | Body Tra | Body Tra | Body Cor |
| Total Factor | ― | ― | 4 | 4 | 4 | ― | ― | ― | 4 | 4 | 4 |
| Acceleration Factor PE | 2 | 2 | 2 | 2 | 2 | 3 | ― | 3 | 2 | 2 | 2 |
| Acceleration Factor 3D | ― | ― | 2 | 2 | 2 | 1 | ― | 1 | 2 | 2 | 2 |
Scan Parameters
| Scan Description | CORONAL HASTE |
AXIAL HASTE |
AXIAL IN/OUT |
Pre CORONAL VIBE |
Pre AXIAL VIBE |
Pre CORONAL Angio |
Dynamic CARE BOLUS CORONAL |
Post CORONAL Angio |
Post AXIAL VIBE 60 sec |
Post AXIAL VIBE 180 sec |
Post CORONAL VIBE 180 sec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TR | 700.0 ms | 7090.0 ms | 6.8 ms | 4.9 ms | 3.5 ms | 2.77 ms | 34.33 ms | 2.77 ms | 3.5 ms | 3.5 ms | 4.9 ms |
| TE | 91.00 ms | 91.00 ms | TE 1: 2.39 ms TE 2: 4.77 ms |
2.16 ms | 1.53 ms | 0.99 ms | 1.29 ms | 0.99 ms | 1.53 ms | 1.53 ms | 2.16 ms |
| Flip Angle | 90 deg | 90 deg | 10 deg | 10 deg | 10 deg | 25 deg | 30 deg | 25 deg | 10 deg | 10 deg | 10 deg |
| Turbo Factor | 256 | 198 | ― | ― | ― | ― | ― | ― | ― | ― | ― |
| Bandwidth | 698 Hz/Px | 698 Hz/Px | 510 Hz/Px | 350 Hz/Px | 640 Hz/Px | 570 Hz/Px | 400 Hz/Px | 570 Hz/Px | 640 Hz/Px | 640 Hz/Px | 350 Hz/Px |
| Fat-Water Contrast | Standard | Standard | Dixon | Fast Fat Saturation | Fast Fat Saturation | Standard | Standard | Standard | Fast Fat Saturation | Fast Fat Saturation | Fast Fat Saturation |
| Gradient Mode | Fast | Fast | Fast | Fast | Fast | Fast | Fast | Fast | Fast | Fast | Fast |
| RF Pulse Type | Fast | Fast | Fast | Fast | Fast | Normal | Normal | Normal | Fast | Fast | Fast |
| Asymmetric Echo | ― | ― | Strong | Off | Off | Allowed | Allowed | Allowed | Off | Off | Off |
Acquisition Parameters
| Scan Description | CORONAL HASTE |
AXIAL HASTE |
AXIAL IN/OUT |
Pre CORONAL VIBE |
Pre AXIAL VIBE |
Pre CORONAL Angio |
Dynamic CARE BOLUS CORONAL |
Post CORONAL Angio |
Post AXIAL VIBE 60 sec |
Post AXIAL VIBE 180 sec |
Post CORONAL VIBE 180 sec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Base Resolution | 256 | 256 | 288 | 320 | 288 | 384 | 256 | 384 | 288 | 288 | 320 |
| Phase Resolution | 100% | 95% | 80% | 60% | 75% | 80% | 88% | 80% | 75% | 75% | 60% |
| Slice Resolution | ― | ― | 60% | 50% | 61% | 63% | ― | 63% | 61% | 61% | 50% |
| Averages | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Concatenations | 2 | 2 | 1 | 1 | 1 | ― | ― | ― | 1 | 1 | 1 |
| FoV Read | 400 mm | 380 mm | 380 mm | 400 mm | 380 mm | 450 mm | 450 mm | 450 mm | 380 mm | 380 mm | 400 mm |
| FoV Phase | 100% | 81% | 83% | 88% | 81% | 81% | 81% | 81% | 81% | 81% | 88% |
| Phase Encoding Dir. | R >> L | A >> P | A >> P | R >> L | A >> P | R >> L | R >> L | R >> L | A >> P | A >> P | R >> L |
| Phase Oversampling | 50% | 0% | 0% | 60% | 0% | 30% | 0% | 30% | 0% | 0% | 60% |
| Slice Oversampling | ― | ― | 33% | 33% | 30% | 8% | ― | 8% | 30% | 30% | 33% |
| Phase Partial Fourier | 5/8 | 5/8 | 6/8 | Off | 6/8 | 6/8 | Off | 6/8 | 6/8 | 6/8 | Off |
| Slice Partial Fourier | ― | ― | 6/8 | 5/8 | 6/8 | 6/8 | Allowed | 6/8 | 6/8 | 6/8 | 5/8 |
| Flow Compensation | None | None | ― | ― | ― | ― | ― | ― | ― | ― | ― |
Scanning Range
| Scan Description | CORONAL HASTE |
AXIAL HASTE |
AXIAL IN/OUT |
Pre CORONAL VIBE |
Pre AXIAL VIBE |
Pre CORONAL Angio |
Dynamic CARE BOLUS CORONAL |
Post CORONAL Angio |
Post AXIAL VIBE 60 sec |
Post AXIAL VIBE 180 sec |
Post CORONAL VIBE 180 sec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Raw Filter | Off | Off | Off | Off | Off | Off | Off | Off | Off | Off | Off |
| Elliptical Filter | Off | Off | Off | Off | Off | Off | Off | Off | Off | Off | Off |
| Distortion Correction | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D | 2D |
| Normalize | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan | Prescan |
| Image Filter | Off | Off | Off | Off | Off | Off | Off | Off | Off | Off | Off |
| Distance Factor | 20% | 20% | 20% | 20% | 20% | 20% | 20% | 20% | 20% | 20% | 20% |
| Slice Thickness | 6.0 mm | 6.0 mm | 4.0 mm | 3.0 mm | 4.0 mm | 1.2 mm | 21.0 mm | 1.2 mm | 4.0 mm | 4.0 mm | 3.0 mm |
| Slices | 30 Slices | 51 Slices | 90 Slices per Slab |
72 Slices per Slab |
86 Slices per Slab |
104 Slices per Slab |
1 Slice | 104 Slices per Slab |
86 Slices per Slab |
86 Slices per Slab |
72 Slices per Slab |
| Time of Acquisition | 29 sec | 6:11 min | 16 sec | 16 sec | 9 sec | 17 sec | 56 sec | 17 sec | 9 sec | 9 sec | 16 sec |