Instructions And Patient Preparation
- Instructions
- This is a high resolution protocol for specific areas of interest and application. Must know the region of interest to direct thin cuts
- Position
- Supine
- Coil
- High Density – 20 channel or greater
- Landmark
- Nasion
Contrast Agent Parameters
| Contrast Agent | Dose | Injection Rate | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Gadopiclenol (VUEWAY) | 0.05 mmol/kg up to a calculated volume of 10 mL | Hand Bolus usually | |||||||
| Saline Flush | 10-20 mL | — | |||||||
| Comments | • Report agent administered and dose • Use minimal dose for patients with a GFR <60 mL/sec (Consider MPR 3 mm recons of all 3D sequences in non-acquired planes) |
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Imaging Parameters
| Scan Description | SAGITTAL T1 CUBE |
AXIAL T1 THIN |
AXIAL T2 THIN |
AXIAL 3D TOF MRA |
AXIAL DWI |
AXIAL T2* SWAN |
Post AXIAL T1 THIN |
Post CORONAL T1 CUBE |
Optional: Pre and Post AXIAL T1 CUBE VWI |
|---|---|---|---|---|---|---|---|---|---|
| View Image | View Image | View Image | |||||||
| Primary Sequence | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | Optional |
| Mode | FSE-XL | 2D | 2D | 3D | 2D | 3D | 2D | 3D | 3D |
| Pulse Sequence | 3D CUBE T1 | FSE-XL | FSE-XL | 3D TOF | SE-EPI | SWAN | FSE-XL | FSE-XL | CUBE |
| Imaging Options | EDR, ZIP2, ZIP512, FR, ARC |
EDR, ARC | FAST, TRF, FC | FC, ASSET | EPI, DIFF, ASSET | FC, ARC ZIP2, FAST |
EDR, ARC | EDR, ZIP2, ZIP512, FR, ARC |
EDR, FAST, FR, ARC, HS |
Scan Parameters
| Scan Description | SAGITTAL T1 CUBE |
AXIAL T1 THIN |
AXIAL T2 THIN |
AXIAL 3D TOF MRA |
AXIAL DWI |
AXIAL T2* SWAN |
Post AXIAL T1 THIN |
Post CORONAL T1 CUBE |
Optional: Pre and Post AXIAL T1 CUBE VWI |
|---|---|---|---|---|---|---|---|---|---|
| TE | 24 | Min | 90 | Out-of-Phase | Min | 50 | Min | 24 | 24 |
| TR | 550 | 500 | 4000 | 32 | 9000 | ― | 500 | 550 | 800 |
| Flip Angle | Auto | 150 | 150 | 20 | Auto | ― | 150 | 13 | 13 |
| ETL | 24 | 3 | 22 | ― | ― | 30 | 3 | 24 | 25 |
| Bandwidth | 62 | 62 | 62 | 62 | 125 | 41 | 62 | 62 | 62 |
| SAT | ― | ― | ― | S | ― | ― | ― | Fat | Fat |
Acquisition Parameters
| Scan Description | SAGITTAL T1 CUBE |
AXIAL T1 THIN |
AXIAL T2 THIN |
AXIAL 3D TOF MRA |
AXIAL DWI |
AXIAL T2* SWAN |
Post AXIAL T1 THIN |
Post CORONAL T1 CUBE |
Optional: Pre and Post AXIAL T1 CUBE VWI |
|---|---|---|---|---|---|---|---|---|---|
| MATRIX freq | 256 | 256 | 256 | 256 | 128 | 288 | 256 | 288 | 224 |
| MATRIX phase | 256 | 256 | 288 | 256 | 128 | 256 | 256 | 288 | 224 |
| NEX | 1 | 2 | 2 | 2 | 1 | ― | 2 | 1 | 2 |
| Phase FOV | ― | Full | Full | Full | 1 | .75 | Full | 0.7 | 0.9 |
| Freq Direction | S/I | A/P | A/P | Slice | R/L | A/P | A/P | S/I | R/L |
| Image Enhance | PURE | PURE | PURE | PURE | PURE | PURE | PURE | PURE | PURE |
| FC Direction | ― | Slice | Slice | Slice | ― | Slice | Slice | ― | ― |
| User CV | CUBE Enh 3 ACC=2 |
ACC=2 | ACC=2 | 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 |
Phase Images ACC=2 (HyperSense 1.2 if available) |
ARC | Fat Sat Eff 1 CUBE Enh 3 ACC=2 |
CUBE Enh 3 ACC=2 1.25 HS 1.0 |
Scanning Range
| Scan Description | SAGITTAL T1 CUBE |
AXIAL T1 THIN |
AXIAL T2 THIN |
AXIAL 3D TOF MRA |
AXIAL DWI |
AXIAL T2* SWAN |
Post AXIAL T1 THIN |
Post CORONAL T1 CUBE |
Optional: Pre and Post AXIAL T1 CUBE VWI |
|---|---|---|---|---|---|---|---|---|---|
| FOV | 22 | 22 | 22 | 22 | 24 | 24 | 22 | 24 | 17 |
| Slice Thickness | 1.2 | 2 | 2 | 0.7 | 5 | 2.6 | 2 | 1 | 0.8 |
| Spacing | ― | 0 | 0 | 0 | 1 | ― | 0 | ― | ― |
| Number of Slices | 112 | 25 | 25 | 160 | 24-26 | 24-26 | 25 | 112 | 200 |
| Scan Time | 3-5 min | 4-5 min | 3-4 min | 5-7 min | 0:50 sec | 5 min | 4-5 min | 2:30 min | 3-5 min |
