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Pediatric Brain Tumor – Surgical Planning (Smaller Patients) 3T

Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols

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Instructions And Patient Preparation

Instructions
Position the head in the head coil and immobilize with cushions
Give cushions under the legs for extra comfort
Connect the anterior portion of the head coil and secure it in place.
Sedation vs bundle and feed is the ordering provider’s decision
Common Indications
Brain tumor
Cerebellar lesion
Position
Head First
Supine
Coil
Head Coil 20ch
Landmark
Center over the glabella
Patient Population
These protocols are intended for smaller patients and serve as starting points. If a smaller FOV is needed, the parameters are modified accordingly.
AX DTI
We would perform the DTI only if it’s requested
Contrast Timing
Post Ax T2 (Run post to allow time for tumor to absorb contrast)

Contrast Agent Parameters

Contrast Agent Dose Injection Rate Dose Timing Method and Scan Delay
Gadopiclenol (VUEWAY) 0.1 mL/kg Hand injected Post-contrast series acquired after gadolinium administration

Imaging Parameters

Scan Description AAhead_scout SAG
MPRAGE
3D		 SAG
T2
3D
SPACE
STEALTH		 AX
T2
FLAIR
DRB		 AX
SWI		 AX
DWI		 AX
DTI		 POST
AX
T2WI
(3mm)
DRB		 AX
T1WI
FLAIR
DRB		 COR
HR
T2WI
(3mm)
DRB		 PERFUSION AX
T2WI
(3mm)
DRB		 POST
SAG
MPRAGE
3D
STEALTH		 POST
AX
T1WI
FLAIR
DRB		 POST
AX
T2
FLAIR
DRB
    View Image   View Image View Image View Image   View Image View Image View Image   View Image View Image View Image View Image
Sequence Name fl tfl spcR tir swi_r epse epse tseR tir tse epfid tseR tfl tir tir
Dimension 3D 3D 3D 2D 3D 2D 2D 2D 2D 2D 2D 2D 3D 2D 2D
Acceleration mode GRAPPA GRAPPA CAIPIRINHA GRAPPA GRAPPA SMS SMS GRAPPA GRAPPA GRAPPA GRAPPA GRAPPA GRAPPA GRAPPA GRAPPA
Total Factor ― ― 4 ― ― ― ― ― ― ― ― ― ― ― ―
Acceleration Factor PE 3 2 2 3 2 2 2 3 3 3 2 3 2 3 3
Acceleration Factor 3D 1 1 2 ― 1 ― ― ― ― ― ― ― 1 ― ―
Reference Lines PE 24 64 24 52 24 30 34 40 24 26 62 40 64 24 52
Reference Scans Integrated GRE/Separate Integrated Integrated Integrated EPI/Separate EPI/Separate Integrated Integrated Integrated EPI/Separate Integrated GRE/Separate Integrated Integrated
Deep Resolve ― ― ― On Off Off Off On On On ― On ― On On

Scan Parameters

Scan Description AAhead_scout SAG
MPRAGE
3D		 SAG
T2
3D
SPACE
STEALTH		 AX
T2
FLAIR
DRB		 AX
SWI		 AX
DWI		 AX
DTI		 POST
AX
T2WI
(3mm)
DRB		 AX
T1WI
FLAIR
DRB		 COR
HR
T2WI
(3mm)
DRB		 PERFUSION AX
T2WI
(3mm)
DRB		 POST
SAG
MPRAGE
3D
STEALTH		 POST
AX
T1WI
FLAIR
DRB		 POST
AX
T2
FLAIR
DRB
TR 3.15 ms 2500.0 ms 3200.0 ms 9000.0 ms 27.0 ms 3200.0 ms 4100.0 ms 4000.0 ms 2000.0 ms 4400.0 ms 1600.0 ms 4000.0 ms 2500.0 ms 2000.0 ms 9000.0 ms
TE 1.37 ms 3.87 ms 401.00 ms 126.00 ms 20.00 ms 87.00 ms 89.00 ms 106.00 ms 9.00 ms 106.00 ms 30.00 ms 106.00 ms 3.87 ms 9.00 ms 126.00 ms
TI ― 1240 ms ― 2500 ms ― ― ― ― 900 ms ― ― ― 1240 ms 900 ms 2500 ms
Flip Angle 8 deg 8 deg T2 Var 150 deg 15 deg ― ― 160 deg 150 deg 160 deg 90 deg 160 deg 8 deg 150 deg 150 deg
Bandwidth 540 Hz/Px 170 Hz/Px 657 Hz/Px 289 Hz/Px 120 Hz/Px 1540 Hz/Px 1330 Hz/Px 241 Hz/Px 260 Hz/Px 250 Hz/Px 1446 Hz/Px 241 Hz/Px 170 Hz/Px 260 Hz/Px 289 Hz/Px
Turbo Factor ― 224 282 21 ― ― ― 15 4 17 ― 15 224 4 21
Echo Spacing ― 9.06 ms 3.78 ms 9.02 ms ― 0.94 ms 0.94 ms 9.60 ms 9.02 ms 9.66 ms 0.78 ms 9.60 ms 9.06 ms 9.02 ms 9.02 ms
Echo Trains per Slice ― ― ― 7 ― ― ― 12 32 11 ― 12 ― 32 7
EPI Factor ― ― ― ― ― 112 114 ― ― ― 128 ― ― ― ―
Gradient Mode Normal Normal Fast Fast Normal Fast* Fast Fast Fast Fast Fast Fast Normal Fast Fast
RF Pulse Type Fast Normal Normal Normal Fast Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal
RF Spoiling On On ― ― On ― ― ― ― ― ― ― On ― ―
Asymmetric Echo Weak Off ― ― Off ― ― ― ― ― ― ― Off ― ―
Flow Compensation ― None None None On ― ― None None None ― None None None None
Reduce Motion Sens. ― ― ― On ― ― ― On On On ― On ― On On
Phase Correction ― ― ― Automatic ― External Internal Automatic Automatic Automatic ― Automatic ― Automatic Automatic

Contrast & Magnetization

Scan Description AAhead_scout SAG
MPRAGE
3D		 SAG
T2
3D
SPACE
STEALTH		 AX
T2
FLAIR
DRB		 AX
SWI		 AX
DWI		 AX
DTI		 POST
AX
T2WI
(3mm)
DRB		 AX
T1WI
FLAIR
DRB		 COR
HR
T2WI
(3mm)
DRB		 PERFUSION AX
T2WI
(3mm)
DRB		 POST
SAG
MPRAGE
3D
STEALTH		 POST
AX
T1WI
FLAIR
DRB		 POST
AX
T2
FLAIR
DRB
Fat-Water Contrast Standard Standard Standard Fat Saturation Standard Fat Saturation Fat Saturation Standard Standard Standard Fat Saturation Standard Standard Standard Fat Saturation
Fat Saturation ― ― ― Strong ― Strong Strong ― ― ― ― ― ― ― Strong
Magn. Preparation ― Non-sel. IR None Slice-sel. IR None None None None Slice-sel. IR None ― None Non-sel. IR Slice-sel. IR Slice-sel. IR
MTC ― ― Off Off Off Off Off Off Off Off Off Off ― Off Off
Dark Blood ― Off Off Off Off ― ― Off Off Off ― Off Off Off Off
Contrasts 1 1 ― 1 1 ― ― 1 1 1 ― 1 1 1 1
Reconstruction Magnitude Magnitude Magnitude Magnitude Magn./Phase Magnitude Magnitude Magnitude Magnitude Magnitude Magnitude Magnitude Magnitude Magnitude Magnitude
Wrap-up Magn. ― ― Restore None ― ― ― Restore None None ― Restore ― None None

Acquisition Parameters

Scan Description AAhead_scout SAG
MPRAGE
3D		 SAG
T2
3D
SPACE
STEALTH		 AX
T2
FLAIR
DRB		 AX
SWI		 AX
DWI		 AX
DTI		 POST
AX
T2WI
(3mm)
DRB		 AX
T1WI
FLAIR
DRB		 COR
HR
T2WI
(3mm)
DRB		 PERFUSION AX
T2WI
(3mm)
DRB		 POST
SAG
MPRAGE
3D
STEALTH		 POST
AX
T1WI
FLAIR
DRB		 POST
AX
T2
FLAIR
DRB
Base Resolution 160 224 224 320 256 112 114 384 320 400 128 384 224 320 320
Phase Resolution 100 % 100 % 100 % 70 % 96 % 100 % 100 % 80 % 70 % 85 % 100 % 80 % 100 % 70 % 70 %
Slice Resolution 69 % 100 % 100 % ― 100 % ― ― ― ― ― ― ― 100 % ― ―
Averages 1 1 2.0 1 1 ― ― 1 1 1 1 1 1 1 1
Concatenations 1 1 1 2 1 1 1 2 2 2 1 2 1 2 2
FoV Read 260 mm 200 mm 200 mm 180 mm 180 mm 180 mm 180 mm 180 mm 180 mm 180 mm 220 mm 180 mm 200 mm 180 mm 180 mm
FoV Phase 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 %
Phase Encoding Dir. A >> P A >> P A >> P R >> L R >> L A >> P A >> P R >> L R >> L R >> L A >> P R >> L A >> P R >> L R >> L
Phase Oversampling 0 % 0 % 0 % 50 % 0 % 0 % 0 % 50 % 50 % 50 % 0 % 50 % 0 % 50 % 50 %
Slice Oversampling 0.0 % 7.7 % 8.3 % ― 10.0 % ― ― ― ― ― ― ― 7.7 % ― ―
Phase Partial Fourier 6/8 Off Off Off 7/8 7/8 6/8 Off Off Off Off Off Off Off Off
Slice Partial Fourier 6/8 Off Off ― 7/8 ― ― ― ― ― ― ― Off ― ―
Interpolation ― On On On Off On Off On On On Off On On On On
Trajectory Cartesian ― ― ― ― ― ― ― ― ― ― ― ― ― ―
Multi-Slice Mode Sequential Single Shot ― Interleaved Interleaved Interleaved Interleaved Interleaved Interleaved Interleaved Interleaved Interleaved Single Shot Interleaved Interleaved

Scanning Range

Scan Description AAhead_scout SAG
MPRAGE
3D		 SAG
T2
3D
SPACE
STEALTH		 AX
T2
FLAIR
DRB		 AX
SWI		 AX
DWI		 AX
DTI		 POST
AX
T2WI
(3mm)
DRB		 AX
T1WI
FLAIR
DRB		 COR
HR
T2WI
(3mm)
DRB		 PERFUSION AX
T2WI
(3mm)
DRB		 POST
SAG
MPRAGE
3D
STEALTH		 POST
AX
T1WI
FLAIR
DRB		 POST
AX
T2
FLAIR
DRB
Slice Thickness 1.6 mm 0.90 mm 0.90 mm 4.0 mm 1.50 mm 4.0 mm 1.8 mm 3.0 mm 4.0 mm 3.0 mm 4.0 mm 3.0 mm 0.90 mm 4.0 mm 4.0 mm
Slices 128 Slices
per Slab		 208 Slices
per Slab		 192 Slices
per Slab		 36 Slices 80 Slices
per Slab		 34 Slices 62 Slices 50 Slices 36 Slices 50 Slices 20 Slices 50 Slices 208 Slices
per Slab		 36 Slices 36 Slices
Distance Factor 20 % 50 % ― 0 % 20 % 10 % 0 % 0 % 0 % 0 % 30 % 0 % 50 % 0 % 0 %
Special Saturation ― ― None None None None None None None None None None ― None None
Raw Filter Off Off On Off Off Off Off Off Off Off On Off Off Off Off
Elliptical Filter Off Off Off Off Off Off Off Off Off Off Off Off Off Off Off
Image Filter Off On Off Off Off ― ― Off Off Off ― Off On Off Off
Distortion Correction 3D 2D 2D 2D 2D Off Off 2D 2D 2D 2D 2D 2D 2D 2D
Normalize Prescan Prescan Prescan Prescan Prescan Prescan Prescan Prescan Prescan Prescan Off Prescan Prescan Prescan Prescan
Noise Masking Off ― ― ― ― Off Off ― ― ― ― ― ― ― ―
Time of Acquisition 14 sec 4:52 min 4:40 min 2:26 min 4:11 min 3:20 min 7:20 min 1:46 min 2:14 min 1:47 min 1:42 min 1:46 min 4:52 min 2:14 min 2:26 min

Diffusion

Scan Description AAhead_scout SAG
MPRAGE
3D		 SAG
T2
3D
SPACE
STEALTH		 AX
T2
FLAIR
DRB		 AX
SWI		 AX
DWI		 AX
DTI		 POST
AX
T2WI
(3mm)
DRB		 AX
T1WI
FLAIR
DRB		 COR
HR
T2WI
(3mm)
DRB		 PERFUSION AX
T2WI
(3mm)
DRB		 POST
SAG
MPRAGE
3D
STEALTH		 POST
AX
T1WI
FLAIR
DRB		 POST
AX
T2
FLAIR
DRB
Diffusion Mode ― ― ― ― ― MDDW MDDW ― ― ― ― ― ― ― ―
Diffusion Scheme ― ― ― ― ― Monopolar Monopolar ― ― ― ― ― ― ― ―
Diff. Directions ― ― ― ― ― 6 30 ― ― ― ― ― ― ― ―
b-value 1 ― ― ― ― ― 0 s/mm² 0 s/mm² ― ― ― ― ― ― ― ―
b-value 2 ― ― ― ― ― 1000 s/mm² 1000 s/mm² ― ― ― ― ― ― ― ―
Averages b-value 1 ― ― ― ― ― 1 12 ― ― ― ― ― ― ― ―
Averages b-value 2 ― ― ― ― ― 3 3 ― ― ― ― ― ― ― ―
Diff. Weightings ― ― ― ― ― 3 2 ― ― ― ― ― ― ― ―
Diff. Weighted Images ― ― ― ― ― Off On ― ― ― ― ― ― ― ―
Trace Weighted Images ― ― ― ― ― On On ― ― ― ― ― ― ― ―
ADC Maps ― ― ― ― ― On On ― ― ― ― ― ― ― ―
Exponential ADC Maps ― ― ― ― ― Off Off ― ― ― ― ― ― ― ―
FA Maps ― ― ― ― ― On On ― ― ― ― ― ― ― ―
Calculated Image ― ― ― ― ― Off Off ― ― ― ― ― ― ― ―

Dynamic Contrast

Scan Description AAhead_scout SAG
MPRAGE
3D		 SAG
T2
3D
SPACE
STEALTH		 AX
T2
FLAIR
DRB		 AX
SWI		 AX
DWI		 AX
DTI		 POST
AX
T2WI
(3mm)
DRB		 AX
T1WI
FLAIR
DRB		 COR
HR
T2WI
(3mm)
DRB		 PERFUSION AX
T2WI
(3mm)
DRB		 POST
SAG
MPRAGE
3D
STEALTH		 POST
AX
T1WI
FLAIR
DRB		 POST
AX
T2
FLAIR
DRB
Dynamic Mode Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard
Measurements 1 1 1 1 1 ― ― 1 1 1 60 1 1 1 1
Multiple Series ― Each Measurement Each Measurement Each Measurement Each Measurement Off Off Each Measurement Off Each Measurement Off Each Measurement Each Measurement Off Each Measurement
Time to Center 6.2 s ― ― ― ― ― ― ― ― ― ― ― ― ― ―