CT Head 3D Stereotactic

Last Updated: 2026-01-01 Author:

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• 1. Clinical Summary

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  Acquisition SummaryClinical Indications

  Series	Phase	Coverage
  Stereotactic Head	Contrast (N/A (or 60-90s if contrast) delay)	Vertex to Skull base

  • Stereotactic surgery planning
  • DBS planning
  • Biopsy planning
  • Surgical navigation
  • Gamma knife

• 2. Patient Prep

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  • Position: Supine in surgical position. Head in frame if required
  • NPO Status: N/A

• 3. IV Contrast & Injection

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  Injection ParametersLab Requirements

  Parameter	Value
  Agent	None typically. Contrast optional
  Volume	If contrast: 100 mL
  Flow Rate	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

  • Submillimeter ISOTROPIC acquisition. Vertex to skull base. DICOM for surgical planning. Frame or fiducials if required
  • Additional Recons: Export to surgical navigation. Isotropic 0.5mm. Coordinates for targeting

  • Position exactly as for surgery. Frame placement if required

  Safety First

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

  • Isotropic high-resolution for surgical targeting. Anatomic landmarks. Tumor if contrast

  • Isotropic voxels critical. Export DICOM to surgical planning

Series AcquisitionPost-Processing

Series Name	Start Location	End Location	Delay	Slice Thickness	Notes
Scout	Vertex	Skull base	N/A	N/A	Lateral
Stereotactic Head	Vertex	Skull base	N/A (or 60-90s if contrast)	0.5-0.625 mm	Isotropic submillimeter

Plane	Acquisition	FOV	Thickness/Increment	Kernel	IR Strength	Notes
Axial	Stereo	Brain	0.5 mm/0.5 mm	Brain (Bone if needed)	3	Isotropic axial
Coronal	Stereo	Brain	0.5 mm/0.5 mm	Brain	3	Isotropic coronal
Sagittal	Stereo	Brain	0.5 mm/0.5 mm	Brain	3	Isotropic sagittal midline
3D surface	Stereo	Brain	0.5 mm source	Brain	3	Surface for navigation