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Imaging of the Paranasal Sinuses

Daniel T. Boll¹, Michael Coffey¹, Jonathan S. Lewin¹

¹University Hospitals of Cleveland/Case Western Researve University, Cleveland, Ohio

Publication Name:

Current Protocols in Magnetic Resonance Imaging

Unit Number:

Unit A7.6

DOI:

10.1002/0471142719.mia0706s07

Online Posting Date:

February, 2003

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Abstract

MRI in most instances, can better distinguish between soft tissues when compared with CT. The distinction of soft tissues becomes most clinically relevant when evaluating for possible sinonasal tumors and when inspecting for extension of tumor or inflammation into the orbit or intracranial spaces. It is in these areas that MRI has found its major application in sinus imaging. This unit presents MRI techniques for imaging the sinuses with and without contrast enhancement. The parameters given in this unit are derived from experience at 1.5 T and may need to be slightly altered depending on the field strength and the equipment manufacturer.

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Unit Introduction
Basic Protocol 1: Imaging of the Paranasal Sinuses by MRI Without Contrast Enhancement
Basic Protocol 2: Imaging of the Paranasal Sinuses by MRI with Contrast Enhancement
Commentary
Literature Cited
Figures
Tables

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Materials

Basic Protocol 2: Imaging of the Paranasal Sinuses by MRI with Contrast Enhancement

Materials

Normal saline (0.9% NaCl), sterile
Gadolinium-based MR contrast agent (e.g., Magnevist, Omniscan, or Prohance)

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Figures

Figure A7.6.1

This T₂-weighted TSE image shows an opacification (arrow) of the right maxillary sinus.

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Figure A7.6.2

This T₁-weighted SE image shows the maxillary sinus of an 8-month-old male.

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Figure A7.6.3

This T₁-weighted SE image shows a small retention cyst or polyp (arrow) within the left maxillary sinus.

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Figure A7.6.4

This T₁-weighted SE image with fat saturation shows contrast enhancement of the mucous membranes (arrow) of the opacified right maxillary sinus.

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Figure A7.6.5

This T₁-weighted SE image with fat saturation shows contrast enhancement of the mucous membranes (arrow) of the opacified right maxillary sinus, same patient as in Figure A7.6.4.

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Literature Cited

Literature Cited
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