MSCT of the Paranasal Sinuses

Paranasal‑sinus MSCT is a high‑precision exam that provides detailed imaging of mucosa, nasal cavity structures and all accessory sinuses. Unlike plain radiography, multi‑slice scanning enables early detection of changes. The examination is performed on CT Philips Brilliance 64.

Exam scope

• All paranasal sinuses communicating with the nasal cavity.
• Mucosal linings.
• Nasal anatomical structures (septum, turbinates, osteomeatal complex).

Diagnostic capabilities

• Inflammatory processes: maxillary, ethmoidal, frontal, sphenoidal sinusitis.
• Presence of fluid/effusion in sinuses.
• Neoplasms: tumors, cysts, polyps.
• Post‑traumatic injuries; fractures of sinus walls.
• Allergic involvement; mucocele.

What does MSCT show?

• Developmental anomalies of the paranasal sinuses.
• Fractures and trauma sequelae.
• Mucosal thickening; osteomeatal complex obstruction.
• Benign and malignant tumors.
• Foreign bodies.
• Deviated nasal septum.
• Inflammatory signs and complications.

Procedure

• Remove metal items and lie on the CT table.
• Head immobilized with a bolster and strap to reduce motion.
• Layered scanning performed; 3D reconstruction generated.
• Technologist monitors from the adjacent room.

Preparation

• Typically no preparation.
• With contrast: creatinine test and short fasting.
• Duration: ~5 minutes without contrast; 20–30 minutes with contrast.

Equipment

• Philips Brilliance CT with high spatial resolution.
• Low‑dose protocols; multiplanar and 3D reconstructions.
• Structured radiology report.