MR Liver Mass with MRCP W/WO BODY Protocol
Scan Notes:
- If Eovist is ordered, follow the Eovist protocol.
- The MRCP sequences must be performed BEFORE the Eovist administration. Otherwise, the dense contrast blacks out the MRCP sequences.
- Void before exam
- Send ADC maps
- FOV: do not include patient’s arms
Breath Holds:
- Scan on expiration.
- Monitor that patient is breath-holding. Breathe the patient slowly so they have time to follow instructions. Do not start scan until the patient has stopped breathing.
- Give 2L O2 if it will help with breath-holds UNLESS PATIENT HAS COPD OR ANOTHER REASON NOT TO GIVE O2.
Last updated: 4/12/19
Charge as: Abdomen WWO
Scanner preference: 1.5T
Coil: Torso Coil
| Plane | Weighting | Mode | Slice | Gap | FAT SAT | FOV | Notes |
|---|---|---|---|---|---|---|---|
| Cor | T2 | SSFSE BH | 7mm | 1mm | N | Liver through bottom of kidneys | Ensure liver is well-centered in coil to ensure good signal at dome. |
| Axial | T1 | Dual Echo SPGR BH | 5mm | 0.5mm | N | Entire liver | May be separated into overlapping stacks if patient cannot breath-hold. Do not interleave images. Okay to use 6mm slice thickness with 1mm gap on MR1 and CHMR2. |
| Axial | T2 | bTFE BH | 4mm | -2mm | N | Perform 3 overlapping stacks. Do not interleave. | |
| Cor | T2 | 3D MRCP | 1.4mm | Y | Bottom 2/3 of liver through bottom of pancreas | Please use navigator trigger & track. | |
| Cor | T2 | Radial MRCP | 40mm | Y | Liver through bottom of kidneys | Please use navigator trigger & track. | |
| Axial | T1 | 3D mDixon pre BH | - | - | Y | Entire liver | Ensure quality before contrast injection |
Contrast injection
Power Inject. Bolus Track. Trigger when bolus reaches SMA.
| Plane | Weighting | Mode | Slice | Gap | FAT SAT | FOV | Notes |
|---|---|---|---|---|---|---|---|
| Axial | T1 | 3D mDixon x3 phases BH | - | - | Y | Entire liver | Exact parameters as the pre-mDixon. |
| Axial | T1 | 3D mDixon BH 4 min delay | - | - | Y | Entire liver | Timed exactly 4 mins post-injection. |
| Axial | T2 | TSE RT | 5mm | 0.5mm | SPAIR | Entire liver | Okay to use 6mm slice thickness with 1mm gap on MR1 and CHMR2. |
| Axial | T1 | 3D mDixon BH 10 min delay | - | - | Y | Entire liver | Timed exactly 10 mins post-injection. |
| Axial | T2 | DWI | 7mm | 1mm | SPIR | Liver through bottom of kidneys | Trigger & Track |
| Axial | T2 | SSFSE RT | 5mm | 0.5mm | Y | Entire liver | Optional sequence if T2 SPAIR is poor quality. Okay to use 6mm slice thickness with 1mm gap on MR1 and CHMR2. |
