CTV Chest Abdomen Pelvis

Last Updated: 2026-01-01 Author:

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• 1. Clinical Summary

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  Acquisition SummaryClinical Indications

  Series	Phase	Coverage
  CTV Venous Phase	Contrast (110 sec delay)	Thoracic inlet to Proximal femur

  • Superior vena cava syndrome
  • Central venous occlusion
  • Tumor staging with venous involvement

• 2. Patient Prep

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  • Position: Supine with arms raised
  • NPO Status: NPO 2-4 hours

• 3. IV Contrast & Injection

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  Injection ParametersLab Requirements

  Parameter	Value
  Agent	Isovue 370
  Volume	2.0 mL/kg
  Flow Rate	3 mL/s
  Duration	40s
  Timing Method	Fixed Delay (180s)

  Use full dose if GFR > 30

  If GFR < 30

  Max Contrast = \(2*\left[\frac{\text{Patient Weight}}{75 \text{ kg}} * \text{eGFR}\right]\)

• 4. Special Notes

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  Technologist NotesNursing NotesRadiologist NotesTips & Tricks

  • Scan at 180 seconds. Include SVC through femoral veins. May need arm injection for SVC assessment
  • Additional Recons: 3D venogram MIP. Curved MPR of SVC and IVC

  • 18-20G IV - may need bilateral arm IVs for SVC

  Safety First

  • Renal Function: Verify eGFR > 30
  • Allergy: Check allergy history. May need bilateral IVs

  • Assess SVC IVC and major tributaries. Look for thrombosis compression or tumor invasion

  • Arms raised. For SVC consider bilateral arm injection

Series AcquisitionPost-Processing

Series Name	Start Location	End Location	Delay	Slice Thickness	Notes
Scout/Topogram	Thoracic inlet	Proximal femur	N/A	N/A	AP full body
CTV Venous Phase	Thoracic inlet	Proximal femur	180 sec	0.625 mm	Extended venous phase

Plane	Acquisition	FOV	Thickness/Increment	Kernel	IR Strength	Notes
Axial	Venous	Chest	2 mm/2 mm	Standard	3	SVC and central veins
Axial	Venous	Abdomen/Pelvis	2.5 mm/2.5 mm	Standard	3	IVC and tributaries
Coronal	Venous	Full CAP	3 mm/3 mm	Standard	3	MIP full venous system
Sagittal	Venous	Full CAP	3 mm/3 mm	Standard	3	Sagittal venogram