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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.

Guideline identity image

CT - Liver Dual Phase Abdomen

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Notes:

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
kV/mAs/
Time per Rotation 
Care Dose 4D On
Care kV on
Child 100
Adult 120
Child 180
Adult 170
0.5s
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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