Instructions And Patient Preparation
- Instructions
- • Contrast is used for assessment of the blood-brain barrier, infection, tumor, and some stroke evaluation
• T2* GRE susceptibility sequence used for trauma, evaluation for blood, and seizure cases
• Perfusion sequence is optional in stroke or tumor cases - Position
- Supine, head first
- Coil
- Head, HNU (Head 24 selected if possible)
- Landmark
- Glabella or chin
Contrast Agent Parameters
| Contrast Agent | Dose | Injection Rate | Dose Timing Method and Scan Delay | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gadopiclenol (VUEWAY) | 0.1 mmol/kg up to a calculated volume of 15 mL | Power inject perfusion at 4 mL/sec | Start scan and inject contrast after 20 sec of scanning | |||||||||
| Saline Flush | 20-30 mL | |||||||||||
| Comments | • Report agent administered and dose • Consider MPR 3 mm recons of all 3D sequences in all non-acquired planes |
|||||||||||
Imaging Parameters
| Scan Description | 3PL LOCALIZER |
SAGITTAL T1 |
AXIAL T2 FSFSE |
AXIAL T1 3D BRAVO |
AXIAL DWI |
AXIAL T2* GRE |
AXIAL DSC PWI |
Pre or Post SAGITTAL T2 FLAIR CUBE |
Post AXIAL T1 3D BRAVO |
Post CORONAL T1 CUBE |
Optional: SAGITTAL 3D T2 CUBE |
Optional: AXIAL T2* SWAN |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | View Image | View Image | View Image | View Image | ||||||
| Primary Sequence | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | Yes | No | No |
| Mode | 2D | 2D | 2D | 3D BRAVO | 2D | 2D | 2D | 3D | 3D BRAVO | 3D | 3D | 3D |
| Pulse Sequence | SSFSE | FSE-XL | FRFSE-XL | BRAVO | SE-EPI | GRE | GRE EPI | CUBE | BRAVO | CUBE | FSE-XL | SWAN |
| Imaging Options | SEQ, EDR, FAST, SS, ARC, TRF |
TRF, FAST, ZIP512 |
FC, TRF, FR, ZIP512 | FAST, IRP, ZIP2, ASSET |
EPI, DIFF, ASSET | FC | ASSET, EPI, Mph | ARC, T2- IRP, ZIP2, EDR |
FAST, IRP, ZIP2, ASSET |
EDR, ZIP2, ZIP512, FR, ARC |
EDR, FAST, FR, ZIP2, ARC | FC, ASSET, ZIP2, FAST |
Scan Parameters
| Scan Description | 3PL LOCALIZER |
SAGITTAL T1 |
AXIAL T2 FSFSE |
AXIAL T1 3D BRAVO |
AXIAL DWI |
AXIAL T2* GRE |
AXIAL DSC PWI |
Pre or Post SAGITTAL T2 FLAIR CUBE |
Post AXIAL T1 3D BRAVO |
Post CORONAL T1 CUBE |
Optional: SAGITTAL 3D T2 CUBE |
Optional: AXIAL T2* SWAN |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TE | 80 | Min-Full | 68 | ― | Min | 20 | 45 | ― | ― | 24 | 90 | 50 |
| TR | Min | 550 | 3500-4250 | ― | 9000 | 500 | 1500 | 6000 | ― | 550 | 2400 | ― |
| TI | ― | ― | ― | 450 | ― | 600-800 | ― | 1954 (Fixed with TR) |
450 | ― | ― | ― |
| Flip Angle | ― | ― | Auto | 13 | Auto | 10 | 30 | Auto | 13 | 13 | ― | 30 |
| ETL | ― | 4 | 25 | ― | ― | ― | ― | 160 | ― | 24 | 120 | ― |
| Bandwidth | 83 | 20 | 31 | 25 | 125 | 20 | Default | 32 | 25 | 62 | 41 | 41 |
| Sat | ― | ― | Fat | ― | ― | ― | ― | Fat | ― | Fat | ― | ― |
Acquisition Parameters
| Scan Description | 3PL LOCALIZER |
SAGITTAL T1 |
AXIAL T2 FSFSE |
AXIAL T1 3D BRAVO |
AXIAL DWI |
AXIAL T2* GRE |
AXIAL DSC PWI |
Pre or Post SAGITTAL T2 FLAIR CUBE |
Post AXIAL T1 3D BRAVO |
Post CORONAL T1 CUBE |
Optional: SAGITTAL 3D T2 CUBE |
Optional: AXIAL T2* SWAN |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MATRIX freq | 256 | 256 | 320 | 256 | 128 | 256 | 128 | 256 | 256 | 288 | 288 | 288 |
| MATRIX phase | 192 | 224 | 256 | 256 | 128 | 224 | 64 | 256 | 256 | 288 | 288 | 256 |
| NEX | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ― |
| Phase FOV | 1 | 1 | 0.75 | ― | 1 | 0.75 | 1 | ― | ― | 0.7 | 1 | .75 |
| Freq Direction | Unswap | S/I | A/P | A/P | R/L | A/P | R/L | S/I | A/P | S/I | S/I | A/P |
| Image Enhance | ― | PURE | PURE | PURE | PURE | PURE | ― | PURE | PURE | PURE | PURE | PURE |
| FC Direction | ― | ― | Slice | ― | ― | Slice | ― | ― | ― | ― | ― | Slice |
| User CV | ― | ― | ― | ACC=2 | DIFF Dir-All #T2 images 1 Nex 1 for T2 B1000/1 Nex OPT TE On Dual SE On ACC=2 Ramp Samp 1 Recon 1 Grad OPT 1 |
― | 1 Shot 75 ph/loc Inter Delay Min ACC=2 Ramp Samp on Phase Correct on |
ACC=2 SL=2 |
ACC=2 | Fat Sat Eff 1 CUBE Enh 3 ACC=2 |
ACC=2 OPT HS 1.2 |
ACC=2 |
Scanning Range
| Scan Description | 3PL LOCALIZER |
SAGITTAL T1 |
AXIAL T2 FSFSE |
AXIAL T1 3D BRAVO |
AXIAL DWI |
AXIAL T2* GRE |
AXIAL DSC PWI |
Pre or Post SAGITTAL T2 FLAIR CUBE |
Post AXIAL T1 3D BRAVO |
Post CORONAL T1 CUBE |
Optional: SAGITTAL 3D T2 CUBE |
Optional: AXIAL T2* SWAN |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FOV | 30 | 24 | 22 | 25 | 24 | 24 | 24 | 25 | 25 | 24 | 24 | 24 |
| Slice Thickness | 7 | 5 | 5 | 2.4 | 5 | 4 | 6 | 1.6 | 1.2 | 1 | 1.2 | 2.6 |
| Spacing | 5 | Interleaved | Interleaved | 0 | 1 | 1 | 1 | 0 | 0 | ― | ― | ― |
| Number of Slices | 7-Ax/Sag/Cor | ― | 24-26 | 70 locs | 24-26 | 24-26 | 18 | 126 | 140 | 112 | 112 | 24-26 |
| Scan Time | 0:18 sec | 2-3 min | ~2-3 min | 2:30 min | ~2-3 min | 2:30 min | 1:53 min | 3-5 min | 4 min | 2:30 min | 3-5 min | 5 min |
