CT Foot

Last Updated: 2026-01-01 Author:

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• 1. Clinical Summary

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  Acquisition SummaryClinical Indications

  Series	Phase	Coverage
  CT Foot	Contrast (N/A or 60s if contrast delay)	Calcaneus to Toes

  • Foot fracture
  • Lisfranc injury
  • Tarsal fractures
  • Foreign body
  • Pre-operative planning

• 2. Patient Prep

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  • Position: Supine feet first
  • NPO Status: N/A

• 3. IV Contrast & Injection

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  Injection ParametersLab Requirements

  Parameter	Value
  Agent	None typically. Contrast if infection
  Volume	If contrast: 75 mL
  Flow Rate	2-3 mL/s

  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

  • Calcaneus through toes. Submillimeter. Weight-bearing position if able. Bilateral for comparison
  • Additional Recons: Document Lisfranc alignment. Calcaneal angles. 3D if complex

  • No IV unless infection suspected

  Safety First

  • Renal Function: N/A or eGFR > 30
  • Allergy: N/A or check allergy

  • Calcaneus. Talus. Navicular. Cuneiforms. Metatarsals. Phalanges. Lisfranc ligament. Plantar fascia

  • Weight-bearing if possible. Bilateral comparison helpful

Series AcquisitionPost-Processing

Series Name	Start Location	End Location	Delay	Slice Thickness	Notes
Scout	Calcaneus	Toes	N/A	N/A	Lateral and AP
CT Foot	Calcaneus	Toes	N/A or 60s if contrast	0.625 mm	Submillimeter

Plane	Acquisition	FOV	Thickness/Increment	Kernel	IR Strength	Notes
Axial	Foot	Foot	1 mm/1 mm	Bone	N/A	Axial bone
Coronal	Foot	Foot	1.5 mm/1 mm	Bone	N/A	Coronal foot
Sagittal	Foot	Foot	1.5 mm/1 mm	Bone	N/A	Sagittal foot
Oblique	Foot	Lisfranc	1.5 mm	Bone	N/A	Lisfranc joint