Anatomic correlates of acoustic rhinometry as measured by rigid nasal endoscopy

Abstract

Acoustic rhinometry (AR) evaluates the cross-sectional areas and volume of the nasal cavity through acoustic reflections. Successive valleys displayed on an AR graph are believed to correspond to anatomic landmarks. To assess the anatomic accuracy of AR, we performed AR and endoscopic measurements with a rigid endoscope in 85 normal human subjects after topical decongestion. Endoscopic measurements were recorded for distances between the midcolumella and the nasal valve, the anterior end of the inferior turbinate, the anterior end of the middle turbinate, the midportion of the middle turbinate, and the posterior nasopharynx. The first AR valley most closely corresponded with endoscopic measurements of the nasal valve. The second valley had a mean value that corresponded with the anterior end of the inferior turbinate. The third valley matched best with the values of the anterior end of the middle turbinate. Nasopharyngeal measurements by each modality yielded a good agreement. AR appears to correspond to nasal anatomic landmarks but not in an exact point-to-point manner.

Rinometria acústica: correlação anatômica dos dois primeiros entalhes encontrados no rinograma

“…The distance from beginning of obstacle is accurately reflected in the rhinogram as being the most initial point of the notch. Thus, AST1 reported by Corey et al 11 can only reflect a narrow region of the anterior nasal cavity to NV.…”

“…Corey et al 11 stated that the anatomical correlation of the first notch is not clearly delineated, but it seems to correspond to the region close to NV. They stated that because in their study AST1 was located anteriorly to the distance of NV measured endoscopically.…”

“…However, in the literature, we find disagreeing opinions about their anatomical correlation. The area of transversal section of the first notch (AST1) would be the nasal valve 7 , "isthmus nasi" 6,8,9 , "ostium internum" 10 , an area close to NV 11 , the junction of the nasal adapter and the nostril 12 or the junction of nasal adapter and "isthmus nasi" 13 . The area of transversal section of the second notch (AST2) would refer to the head of the inferior nasal concha (CNI) [7][8][9][10]14,15 or to NV 12,13 .…”

Evaluation of the Frequency of the Accompanying Nasal Symptoms in Rhinoseptoplasty Patients

“…In our study we have monitored the patients for a period of one year. We monitored their nasal symptoms using tables and graphs and we tried to show in the simplest way what the benefit of the performed septorhinoplasty was and how it affected the reduction of their symptoms [4][5][6].…”

A influência da obstrução das vias aéreas superiores na determinação do tipo facial

“…A rinometria acústica se mostrou um método válido e confiável para análise do segmento anterior nasal até o nível das conchas nasais (Terheyden et al, 2000), quando comparada à ressonância magnética (Corey et al, 1997), à endoscopia (Corey et al, 1999), e à tomografia computadorizada (Mamikoglu et al, 2000;Terheyden et al, 2000).…”