The nasal valve: new insights on the static and dynamic NV with MR-imaging.
MR
NV angle
NVC
Nasal valve
Journal
European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery
ISSN: 1434-4726
Titre abrégé: Eur Arch Otorhinolaryngol
Pays: Germany
ID NLM: 9002937
Informations de publication
Date de publication:
Feb 2020
Feb 2020
Historique:
received:
25
09
2019
accepted:
25
10
2019
pubmed:
7
11
2019
medline:
20
1
2021
entrez:
6
11
2019
Statut:
ppublish
Résumé
We assessed the static nasal valve angle with MR imaging in healthy subjects and evaluated the complex mechanism of nasal valve dynamics during physiologic and forced inspiration. In 17 healthy subjects, measurements of the static nasal valve angle were conducted on MR scans, using a TSE Axial T2-weighted sequence and a 3 mm slice thickness. The dynamic changes of nasal valve movement were detected using MR Cine-imaging techniques. The static median angle of the nasal valve was found to be 28.6° with a range of 12.7°-39.3°. The median degree of nasal valve collapse during forced inspiration was 68% (range 20-99%) of the baseline (static nasal valve angle). In the moderately forced inspiration (3 s) the median nasal valve angle declined to 76% of the baseline angle (range 42-100%). In the physiologic or unforced inspiration, the median nasal valve angle was reduced to 86.3% of the baseline angle (range 52-100%). MRI, as a non-invasive tool, is a reliable method for evaluation of the static nasal valve angle and for the illustration of the complex nasal valve dynamics.
Identifiants
pubmed: 31686188
doi: 10.1007/s00405-019-05715-y
pii: 10.1007/s00405-019-05715-y
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
463-467Références
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