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Related Experiment Videos

Radiographic evaluation for nasal dysfunction: computed tomography versus plain films.

T M Davidson1, F J Brahme, M E Gallagher

  • 1Department of Head & Neck Surgery, University of California, San Diego.

Head & Neck
|September 1, 1989
PubMed
Summary
This summary is machine-generated.

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Plain sinus x-rays are unreliable for diagnosing nasal and paranasal sinus disease. Computed tomographic (CT) scans provide superior diagnostic information, despite higher costs and radiation doses.

Area of Science:

  • Radiology
  • Otolaryngology
  • Medical Imaging

Background:

  • Plain sinus x-rays and computed tomographic (CT) scans are diagnostic tools for nasal and paranasal sinus disease.
  • Previous studies have shown varying concordance rates between these imaging modalities.

Purpose of the Study:

  • To compare the diagnostic accuracy of plain sinus x-rays and CT scans in evaluating nasal and paranasal sinus disease.
  • To determine the reliability of plain films in clinical practice.

Main Methods:

  • Sixty-two patients with nasal dysfunction underwent both plain sinus x-rays and CT scans.
  • Radiographic findings from both methods were independently evaluated and compared.
  • Concordance rates were calculated for different sinus compartments.

Related Experiment Videos

Main Results:

  • Concordance between CT and plain films was poor in the maxillary sinuses (77%), ethmoid sinuses (76%), lower nasal compartment (57%), and olfactory recess (66%).
  • Plain films showed a tendency towards overreading in maxillary sinuses and lower nasal compartment, and underreading in ethmoid sinuses.
  • CT scans offer superior information despite higher costs ($400 vs. $102) and radiation dose (5.2-6.5 cGY vs. 1.4 cGY).

Conclusions:

  • Plain sinus x-rays are unreliable for routine evaluation of nasal and paranasal sinus disease.
  • Limited CT series provide superior radiographic information when evaluation is indicated.
  • Exceptions for plain film use may include pediatric patients or cases of isolated sinus disease.