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Computed tomography technique for evaluation of the nasal valve. Arch Facial Plast Surg 2004 Jul-Aug;6(4):240-3

Date

07/21/2004

Pubmed ID

15262718

DOI

10.1001/archfaci.6.4.240

Scopus ID

2-s2.0-4944250240   33 Citations

Abstract

OBJECTIVE: To compare measurements of the nasal valve on computed tomographic images obtained in the traditional coronal imaging plane with those obtained using the Nasal Base View (NBV) for evaluation of the sinonasal cavities.

METHODS: Thirty computed tomograms of the sinuses were evaluated retrospectively. Coronal re-formations were performed in a plane perpendicular to the hard palate at the most anterior aspect of the nasal bones at the nasal dorsum. Re-formations of the NBVwere performed in a plane perpendicular to the anterior aspect of the estimated acoustic axis. Measurements of the nasal valve angle were performed for both imaging planes in each patient.

RESULTS: Nasal valve angles measured in the traditional, coronal plane were found to have an angle of 8.3 degrees +/- 2.0 degrees (mean +/- SD). Nasal valve angles measured in the NBV had an angle of 11.4 degrees +/- 2.6 degrees. A significant difference was demonstrated (P<.001).

CONCLUSIONS: The traditional coronal computed tomograms of the sinonasal cavities may underestimate the true nasal valve angle. The NBV may provide a more accurate assessment of the nasal valve, as the measured angles of the nasal valve in this plane were found to be more consistent with classic descriptions of 10 degrees to 15 degrees.

Author List

Poetker DM, Rhee JS, Mocan BO, Michel MA

Authors

Michelle A. Michel MD Clinical Professor in the Radiology department at Medical College of Wisconsin
David M. Poetker MD Chief, Professor in the Otolaryngology department at Medical College of Wisconsin
John S. Rhee MD Chair, Professor in the Otolaryngology department at Medical College of Wisconsin




MESH terms used to index this publication - Major topics in bold

Body Weights and Measures
Humans
Paranasal Sinuses
Retrospective Studies
Tomography, X-Ray Computed
jenkins-FCD Prod-480 9a4deaf152b0b06dd18151814fff2e18f6c05280