Arteriovenous Malformation (AVM) Evaluation 1.5T
GE Healthcare – MR Gadopiclenol (VUEWAY®) Protocols
Instructions And Patient Preparation
- Common Indication
- Arteriovenous malformation (AVM)
- Position
- Supine
- Coil
- GEMS Peripheral Vascular (PV) Coil or if smaller area of interest Gem Body Array could be used
- Landmark
- Landmark where you center the Body Array Coil or mid PV Coil
Contrast Agent Parameters
| Contrast Agents | Dose | Injection Rate | ||||
|---|---|---|---|---|---|---|
| Gadopiclenol (VUEWAY) | 0.05 mmol/kg up to a calculated volume of 10 mL. OK to cap at 10 mL max volume for patients larger than 100 kg |
2 mL/sec | ||||
| Saline Flush | 50 mL | 2 mL/sec immediately following gadolinium | ||||
| Comments | TRICKS timing: 1. Start scan 2. Mask runs as clock counts down 3. Inject at 0:00 4. Clock will reset 5. Scan will continue to acquire multiple phases |
|||||
Imaging Parameters
| Scan Description | LOCALIZER SSFSE |
AXIAL/CORONAL T2 Fat Sat |
CORONAL 3D TRICKS |
CORONAL 3D MRA ARC |
AXIAL T1 FSPGR |
CORONAL T1 LAVA-Flex |
|---|---|---|---|---|---|---|
| Mode | 2D | 2D | 3D | 3D | 2D | 3D |
| Pulse Sequence | SSFSE | FRFSE-XL | TRICKS | ceMRA-XV | FAST SPGR | LAVA-Flex |
| Imaging Options | SEQ, FAST, SS, ARC |
TRf, EDR, FAST | FAST, ZIP2, ZIP512 |
FAST, EDR, ARC, ZIP2, ZIP512 |
FAST, ZIP512 | EDR, FAST, ZIP2, ARC |
Scan Parameters
| Scan Description | LOCALIZER SSFSE |
AXIAL/CORONAL T2 Fat Sat |
CORONAL 3D TRICKS |
CORONAL 3D MRA ARC |
AXIAL T1 FSPGR |
CORONAL T1 LAVA-Flex |
|---|---|---|---|---|---|---|
| TE | 80 | 90 | Min | Min | Min | Min |
| TR | Min | Def | Def (2.9) | Def | 110 | Def |
| Flip Angle | — | — | 30 | 15 | 90 | 15 |
| ETL | — | 16 | — | — | — | — |
| Bandwidth | 83 | 50 | 90 | 62 | 41 | 142 |
| SAT | — | Sat Scr Fat Sat |
— | — | Fat Sat | — |
Acquisition Parameters
| Scan Description | LOCALIZER SSFSE |
AXIAL/CORONAL T2 Fat Sat |
CORONAL 3D TRICKS |
CORONAL 3D MRA ARC |
AXIAL T1 FSPGR |
CORONAL T1 LAVA-Flex |
|---|---|---|---|---|---|---|
| MATRIX freq | 384 | 256 | 256 | 256 | 320 | 288 |
| MATRIX phase | 160 | 192 | 192 | 192 | 192 | 224 |
| NEX | Def | 2 | 1 | 1 | 1 | 1 |
| Phase FOV | 1 | 0.8 | 0.5 | 0.8 | .75 or 1 | 0.9 |
| Freq Direction | Unswapped | R/L | — | S/I | R/L | S/I |
| Accel | Ph 2 | — | Ph 2, Sl 2 | Ph 2, Sl 2 | — | Ph 2, Sl 2 |
| Adv CV | 0, 240, 0 | Blur Can 1 Fat Eff 1 EnFnL Sup 0 |
Turbo 2 | Turbo 2 Elip Cent Slice Res 78% |
— | Min ARC Ph OS 24 Min ARC Sl OS 24 Turbo 2 |
| Other | — | — | TRICKS tab: TempPhs 20 Pause Off BOTH Delay Min |
— | — | — |
Scanning Range
| Scan Description | LOCALIZER SSFSE |
AXIAL/CORONAL T2 Fat Sat |
CORONAL 3D TRICKS |
CORONAL 3D MRA ARC |
AXIAL T1 FSPGR |
CORONAL T1 LAVA-Flex |
|---|---|---|---|---|---|---|
| FOV | 48 | 20-35 | 35 | 36-40 | 20 | 35 |
| Slice Thickness | 8 | 4 | 2 | 2 | 4 | 2 |
| Spacing | 0 | 1 | 0 | 0 | 1 | 0 |
| Number of Slices | 21 Slices | PRN Slices | 64 Slices | 70 Slices PRN | PRN x 5 | 140 Locs |
| Approx. Scan Time | ± 1 min each | ± 5:00 | 1:47 (0:32) | ± 20 sec per BH | ± 2-3 min each | 0:24 |