title: Correlation between fiberoptic nasal endoscopy and acoustic rhinometry in adults without nasal complaints.
abstract: BACKGROUND
  Acoustic rhinometry indirectly calculates cross-sectional areas of the nose at various locations from the nostrils and the total volume of the nasal cavity. These parameters are calculated from an area-distance curve displayed by the device.
  
  
  METHODS
  Seventy-seven adults between the ages of 20 and 40 years who had no nasal complaints were examined by acoustic rhinometry and fiberoptic nasal endoscopy in an attempt to compare and correlate areas of nasal narrowing detected by these two methods.
  
  
  RESULTS
  The comparison between the distances to the various narrowed areas revealed a statistically significant correlation between the first three constrictions detected by acoustic rhinometry and the first three areas of anatomic narrowing measured by fiberoptic nasal endoscopy in both nares but no correlation between the fourth constriction and the fourth measurement on either side.
  
  
  CONCLUSIONS
  The results confirm an anatomic correlation between the two examination methods, identifying the first constriction as the nasal valve, the second constriction as the head of the inferior nasal turbinate, and the third constriction as the head of the middle turbinate. The fourth constriction did not correspond to the choanal region.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Federal University of São Paulo, Paulista School of Medicine (UNIFESP-EPM), São Paulo, Brazil.
authors.forename: Débora Mery
authors.initials: DM
authors.lastname: Ouriques
authors.forename: Daniela
authors.initials: D
authors.lastname: Carlini
authors.forename: Reginaldo
authors.initials: R
authors.lastname: Fujita
authors.forename: Shirley Shizue Nagata
authors.initials: SS
authors.lastname: Pignatari
authors.forename: Luc Louis Maurice
authors.initials: LL
authors.lastname: Weckx
mesh_terms: D000328:Adult; D004724:Endoscopy; D005260:Female; D006801:Humans; D008297:Male; D009296:Nasal Cavity / Q000033:anatomy & histology*; D023842:Rhinometry, Acoustic