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CT Sinus

Last Updated: 2026-01-01 Author:

  • 1. Clinical Summary

    Series Phase Coverage
    Coronal Sinus Non-contrast Frontal sinus to Maxillary sinus
    Axial reformat Contrast (From coronal delay) Frontal to Maxillary
    • Sinusitis
    • Sinus disease
    • Pre-operative sinus surgery
    • Nasal obstruction

  • 2. Patient Prep

    • Position: Supine head-first
    • NPO Status: N/A

  • 3. IV Contrast & Injection

    No Intravenous Contrast

    This protocol does not require IV contrast administration.

  • 4. Special Notes

    • Coronal acquisition skull base through maxillary sinuses. Submillimeter for anatomy. Bone and soft tissue windows
    • Additional Recons: Document anatomic variants (Haller cells concha bullosa). OMC assessment
    • No IV. Remove dentures and metal

    Safety First

    • Renal Function: N/A
    • Allergy: N/A
    • Assess all sinuses. Ostiomeatal complex. Anatomic variants. Mucosal thickening. Polyps. Bony anatomy
    • Direct coronal preferred. Submillimeter for anatomy
Series Name Start Location End Location Delay Slice Thickness Notes
Scout Frontal sinus Maxillary sinus N/A N/A Lateral
Coronal Sinus Frontal sinus Maxillary sinus N/A 0.625 mm Direct coronal if possible
Axial reformat Frontal Maxillary From coronal 0.625 mm Reformatted from coronal
Plane Acquisition FOV Thickness/Increment Kernel IR Strength Notes
Coronal Sinus Sinuses 1.25 mm/0.75 mm Bone N/A Bone window
Coronal Sinus Sinuses 3 mm/2 mm Standard 3 Soft tissue
Axial Sinus Sinuses 2 mm/2 mm Bone N/A Axial bone
Sagittal Sinus Sinuses 2 mm/2 mm Bone N/A Midline and lateral