Details
| Original language | English |
|---|---|
| Pages (from-to) | 695-700 |
| Number of pages | 6 |
| Journal | Surgical and Radiologic Anatomy |
| Volume | 42 |
| Issue number | 6 |
| Publication status | Published - 19 Dec 2019 |
Abstract
Purpose: This study aims to determine Euclidean distances between landmark structures in the larynx and pharynx to optimize endoscope shaft designs with regard to gentle and patient-oriented handling. Methods: Four Euclidean distances between landmarks in the larynx and pharynx were analyzed based on CT data of 66 patients. Distance (1): labium inferius oris—posterior pharyngeal wall at the cervical vertebra C1 (atlas), anterior edge of the tuberculum anterius atlantis. Distance (2): posterior pharyngeal wall adjacent to C1—entrance of pyriform sinus. Distance (3): inferior edge of the uvula—superior edge of the epiglottis. Distance (4): base of the vallecula—posterior pharyngeal wall. The minimum angular field of view α required to observe the glottis with a rigid transoral laryngoscope was derived trigonometrically from distances (2) and (4). Results: Average Euclidean distances measured: Distance (1): 90.7 mm ± 6.9 mm in men and 86.9 mm ± 5.9 mm in women. (2): 73.7 mm ± 13.4 mm and 56.2 mm ± 7.6 mm. (3): 25.2 mm ± 8.6 mm and 18.5 mm ± 6.8 mm. (4): 20.8 mm ± 4.6 mm and 16.5 mm ± 3.4 mm. α: 16.0° ± 3.9° and 16.6 ± 4.3°. Conclusions: As expected, statistically significant sex-related differences could be observed for distances (1)–(4). The results indicate that the length of transoral laryngoscopes should not be below 110 mm and that a minimum angular field of view of α = 17° is required to fully observe the laryngeal inlet.
Keywords
- Endoscope design, Laryngopharyngeal dimensions, Laryngoscopy, Morphometrics
ASJC Scopus subject areas
- Medicine(all)
- Anatomy
- Medicine(all)
- Surgery
- Medicine(all)
- Pathology and Forensic Medicine
- Medicine(all)
- Radiology Nuclear Medicine and imaging
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In: Surgical and Radiologic Anatomy, Vol. 42, No. 6, 19.12.2019, p. 695-700.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Euclidean distances of laryngopharyngeal structures obtained from CT data for preclinical development of laryngoscopic devices
AU - Diers, Daniela
AU - Fast, Jacob Friedemann
AU - Götz, Friedrich
AU - Kahrs, Lüder Alexander
AU - Miller, Simone
AU - Jungheim, Michael
AU - Ptok, Martin
N1 - Funding information: This work was funded by Deutsche Forschungsgemeinschaft (DFG) grants PT 2/5-1 and KA 2975/6-1 as well as the European Regional Development Fund (project OPhonLas).
PY - 2019/12/19
Y1 - 2019/12/19
N2 - Purpose: This study aims to determine Euclidean distances between landmark structures in the larynx and pharynx to optimize endoscope shaft designs with regard to gentle and patient-oriented handling. Methods: Four Euclidean distances between landmarks in the larynx and pharynx were analyzed based on CT data of 66 patients. Distance (1): labium inferius oris—posterior pharyngeal wall at the cervical vertebra C1 (atlas), anterior edge of the tuberculum anterius atlantis. Distance (2): posterior pharyngeal wall adjacent to C1—entrance of pyriform sinus. Distance (3): inferior edge of the uvula—superior edge of the epiglottis. Distance (4): base of the vallecula—posterior pharyngeal wall. The minimum angular field of view α required to observe the glottis with a rigid transoral laryngoscope was derived trigonometrically from distances (2) and (4). Results: Average Euclidean distances measured: Distance (1): 90.7 mm ± 6.9 mm in men and 86.9 mm ± 5.9 mm in women. (2): 73.7 mm ± 13.4 mm and 56.2 mm ± 7.6 mm. (3): 25.2 mm ± 8.6 mm and 18.5 mm ± 6.8 mm. (4): 20.8 mm ± 4.6 mm and 16.5 mm ± 3.4 mm. α: 16.0° ± 3.9° and 16.6 ± 4.3°. Conclusions: As expected, statistically significant sex-related differences could be observed for distances (1)–(4). The results indicate that the length of transoral laryngoscopes should not be below 110 mm and that a minimum angular field of view of α = 17° is required to fully observe the laryngeal inlet.
AB - Purpose: This study aims to determine Euclidean distances between landmark structures in the larynx and pharynx to optimize endoscope shaft designs with regard to gentle and patient-oriented handling. Methods: Four Euclidean distances between landmarks in the larynx and pharynx were analyzed based on CT data of 66 patients. Distance (1): labium inferius oris—posterior pharyngeal wall at the cervical vertebra C1 (atlas), anterior edge of the tuberculum anterius atlantis. Distance (2): posterior pharyngeal wall adjacent to C1—entrance of pyriform sinus. Distance (3): inferior edge of the uvula—superior edge of the epiglottis. Distance (4): base of the vallecula—posterior pharyngeal wall. The minimum angular field of view α required to observe the glottis with a rigid transoral laryngoscope was derived trigonometrically from distances (2) and (4). Results: Average Euclidean distances measured: Distance (1): 90.7 mm ± 6.9 mm in men and 86.9 mm ± 5.9 mm in women. (2): 73.7 mm ± 13.4 mm and 56.2 mm ± 7.6 mm. (3): 25.2 mm ± 8.6 mm and 18.5 mm ± 6.8 mm. (4): 20.8 mm ± 4.6 mm and 16.5 mm ± 3.4 mm. α: 16.0° ± 3.9° and 16.6 ± 4.3°. Conclusions: As expected, statistically significant sex-related differences could be observed for distances (1)–(4). The results indicate that the length of transoral laryngoscopes should not be below 110 mm and that a minimum angular field of view of α = 17° is required to fully observe the laryngeal inlet.
KW - Endoscope design
KW - Laryngopharyngeal dimensions
KW - Laryngoscopy
KW - Morphometrics
UR - http://www.scopus.com/inward/record.url?scp=85077082555&partnerID=8YFLogxK
U2 - 10.1007/s00276-019-02397-3
DO - 10.1007/s00276-019-02397-3
M3 - Article
C2 - 31858189
AN - SCOPUS:85077082555
VL - 42
SP - 695
EP - 700
JO - Surgical and Radiologic Anatomy
JF - Surgical and Radiologic Anatomy
SN - 0930-1038
IS - 6
ER -