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Pediatric Maxillofacial / Extracranial Head 1.5T

Siemens Healthineers – MR Gadopiclenol (VUEWAY®) Protocols

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Instructions And Patient Preparation

Instructions
Maxillofacial (extracranial head) imaging with whole-brain coverage.
Position
Head first supine
Coil
Head 20 or Head 64
Patient Preparation
Landmark per department pediatric protocol — pending sign-off.
Coverage
Whole brain — SAG 3D T1 MPRAGE
Maxillofacial — TRAN T2 TSE DIXON
• Superior — Above frontal sinus
• Inferior — Hyoid Bone
• Anterior — Tip of nose
• Posterior — Back of head
Cover area of interest/abnormality — TRAN DWI, TRAN T1 VIBE DIXON PRE AND POST CONTRAST, COR T2 TSE DIXON, COR 3D T1 SPACE FS

Contrast Agent Parameters

Contrast Agent Dose Injection Rate Dose Timing Method and Scan Delay
Gadopiclenol (VUEWAY) 0.05 mmol/kg Hand Bolus or Power Injection Per department pediatric contrast protocol — pending technologist/radiologist sign-off.
Comments • Use minimal dose for patients with a GFR <60 mL/sec
• Report agent administered and dose

Imaging Parameters

Scan Description SAG 3D T1 MPRAGE Tran _T2_TSE_Dixon TRANS rDWI Tran_T1_VIBE_Dixon Cor _T2_TSE_Dixon Post
Tran_T1_VIBE_Dixon		 Post
COR 3D T1 SPACE FS
  View Image View Image View Image View Image View Image View Image View Image
Sequence Name tfl tseR resolve fl tseR fl spcR
Mode Single Shot Interleaved Interleaved ― Interleaved ― ―
PAT Mode GRAPPA GRAPPA ― None None None GRAPPA
Dimension 3D ― 2D 3D ― 3D 3D
Acceleration Factor PE 2 2 2 ― ― ― 2
Acceleration Factor 3D 1 ― ― ― ― ― 1

Scan Parameters

Scan Description SAG 3D T1 MPRAGE Tran _T2_TSE_Dixon TRANS rDWI Tran_T1_VIBE_Dixon Cor _T2_TSE_Dixon Post
Tran_T1_VIBE_Dixon		 Post
COR 3D T1 SPACE FS
TR 1540.0 ms 5120.0 ms 5050.0 ms 6.63 ms 4210.0 ms 6.63 ms 900.0 ms
TE 2.82 ms 96.00 ms 61 ms / 93 ms 2.39 ms / 4.77 ms 87.00 ms 2.39 ms / 4.77 ms 13.00 ms
TI 900 ms ― ― ― ― ― ―
Flip Angle 15 deg 160 deg / 90 deg 180 deg 11 deg 160 deg / 90 deg 11 deg 120 deg / 90 deg
Turbo Factor 132 21 ― ― 21 ― 44
Bandwidth 150 Hz/Px 383 Hz/Px 880 Hz/Px 740 Hz/Px 372 Hz/Px 740 Hz/Px 434 Hz/Px
EPI Factor ― ― 74 ― ― ― ―
Fat Saturation Mode ― Strong Strong ― Strong ― Strong
Fat Suppression Standard Dixon Fat Saturation Dixon Dixon Dixon Fat Saturation
Gradient Mode Normal Normal Fast Fast Normal Fast Fast
RF Pulse Type Fast Normal Normal Fast Normal Fast Normal
Asymmetric Echo Allowed Off ― Weak Off Weak ―

Acquisition Parameters

Scan Description SAG 3D T1 MPRAGE Tran _T2_TSE_Dixon TRANS rDWI Tran_T1_VIBE_Dixon Cor _T2_TSE_Dixon Post
Tran_T1_VIBE_Dixon		 Post
COR 3D T1 SPACE FS
Base Resolution 192 384 98 160 320 160 192
Phase Resolution 100 % 75 % 100 % 90 % 75 % 90 % 100 %
Slice Resolution 75 % ― ― 75 % ― 75 % 75 %
Averages 1 1 ― 1 1 1 1.0
Concatenations 1 3 1 1 3 1 1
b-value ― ― 0 s/mm²/1000 s/mm² ― ― ― ―
FoV Read 192 mm 210 mm 150 mm 130 mm 170 mm 130 mm 190 mm
FoV Phase 100.0 % 100.0 % 100.0 % 117.5 % 75.0 % 117.5 % 89.6 %
Phase Encoding Dir. A >> P R >> L A >> P R >> L R >> L R >> L R >> L
Phase Oversampling 20 % 10 % 50 % 15 % 15 % 15 % 5%
Slice Oversampling 10.0 % ― ― 55.6 % ― 55.6 % 60.0 %
Phase Partial Fourier Off Off Off Off Off Off Off
Slice Partial Fourier Off ― ― Off ― Off Off
Flow Compensation None None ― ― None ― None

Scanning Range

Scan Description SAG 3D T1 MPRAGE Tran _T2_TSE_Dixon TRANS rDWI Tran_T1_VIBE_Dixon Cor _T2_TSE_Dixon Post
Tran_T1_VIBE_Dixon		 Post
COR 3D T1 SPACE FS
Elliptical Filter On Off ― Off Off Off Off
Normalize Prescan Prescan Off Prescan Prescan Prescan Prescan
Distortion Correction 2D 2D 2D 2D 2D 2D 2D
Slice Thickness 1.00 mm 3.0 mm 3.0 mm 0.8 mm 3.0 mm 0.8 mm 1.00 mm
Distance Factor 0% 0% 0% 0% 0% 0% ―
Slices 160 55 37 144 45 144 160
Acquisition Time 3:17 min 4:53 min 4:19 min 3:39 min 4:27 min 3:39 min 5:31 min