ID 112094
Title Alternative
Quantiative evaluation of laryngostroboscopic findings in normal subjects and patients with laryngeal paralysis
喉頭ストロボスコピー所見の定量的評価
Author
Nakagawa, Shinichi The University of Tokushima
Koike, Yasuo The University of Tokushima
Ohyama, Ghen The University of Tokushima
Nakamura, Katsuhiko The University of Tokushima
Koda, Junji The University of Tokushima
Masuda, Hironori The University of Tokushima
Keywords
laryngealstroboscopy
glottal area
quantitative evaluation
unilateral laryngeal paralysis
review
Content Type
Journal Article
Description
A computer system was introduced for quantitative evaluation of laryngeal images in normal volunteers and laryngeal paralysis patients. The subjects consisted of 10 normal volunteers and 10 patients with unilateral laryngeal paralysis (5 median fixation cases and 5 paramedian fixation cases). For phonatory examination, the sustained vowel /e/ with an easy phonation level was used. A glottal area was measured in digitized laryngeal stroboscopic images and normalized by the square of the vocal fold length. The average glottal area was defined to be as the average of the maximum and the minimum normalized glottal areas. In laryngeal paralysis patients, the average glottal area became larger as the paralyzed vocal fold position deviated from the median. Furthermore, the observation methods for vocal fold vibration was reveiwed and discussed. It emphasized that laryngeal stroboscopy was the most useful clinical testing methods.
Journal Title
Shikoku Acta Medica
ISSN
00373699
NCID
AN00102041
Publisher
徳島医学会
Volume
54
Issue
5
Start Page
316
End Page
322
Sort Key
316
Published Date
1998-10-25
FullText File
language
jpn
TextVersion
Publisher
departments
Medical Sciences