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These protocols are based on a 128 slice dual source Siemens CT. Some factors may need to be adjusted for a different CT.

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CT - Liver Dual Phase Abdomen

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If patient is larger than 55kg use adult protocol
If monitoring isn't required, manually put in delays as per attending Radiologist

Indication Prior to Liver transplant, or when a 2 phase (arterial and portal venous) scan is required by Radiologist
Patient Preparation - nil by mouth 4 hours prior
- normally no oral contrast required
- 20-22 gauge cannula in the anticubital fossa
Patient Position - feet first
- supine
- arms raised above head resting on a pillow
Scan Area Start  - Superior aspect of the diaphragm
Finish - Symphysis pubis
For liver - scan only liver in arterial phase
Time per Rotation 
Care Dose 4D On
Care kV on
Child 100
Adult 120
Child 180
Adult 170
Detector Collimation 0.6
Slice Thickness 3mm Pitch 0.6
IV Contrast 2mL/kg 300 concentration. Maximum dose 100mL @ 3-4 mL/sec automatic injector
Care Bolus Monitor @ T12 Trigger 100
Scan Delay Monitoring      - 5 sec delay
Arterial            - 7 sec delay
PV  phase      - 45 sec delay
Reconstructions 3mm I30f Abdomen
0.75mm I30f Abdomen
3mm B70f Lung
0.75mm B70f Lung
Post Processing 3x3mm Coronal and Sagittal MPR
8x2mm MIP if required
Saphire 2 on all abdomen reconstructions 

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  • Date last published: 09 January 2018
  • Document type: Imaging Protocol
  • Services responsible: Paediatric Radiology

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