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Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans10:23

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Related Experiment Video

Updated: Jan 20, 2026

Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans
10:23

Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans

Published on: September 8, 2023

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Sphenopalatine Foramen Computed Tomography Landmarks.

Mohammad Waheed El-Anwar1, Alaa Omar Khazbak1, Atef Hussein1

  • 1Otorhinolaryngology-Head and Neck Surgery Department, Faculty of Medicine.

The Journal of Craniofacial Surgery
|August 31, 2019
PubMed
Summary

This study identified reliable bony landmarks on CT scans for endoscopic localization of the sphenopalatine foramen (SPF). These measurements aid surgeons in procedures like sphenopalatine artery ligation.

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Area of Science:

  • Radiology
  • Otolaryngology
  • Anatomy

Background:

  • Accurate localization of the sphenopalatine foramen (SPF) is crucial for endoscopic sinus surgery.
  • Identifying reliable bony landmarks can improve surgical precision and safety.

Purpose of the Study:

  • To evaluate various radiologic bony landmarks for endoscopic localization of the sphenopalatine foramen (SPF).

Main Methods:

  • Computed tomography (CT) scans of 70 adult patients without sinonasal pathology were analyzed.
  • Measurements of anteroposterior and vertical distances from the SPF to specific bony landmarks were taken on axial and coronal views.
  • Statistical analysis was performed to compare measurements between sides and sexes.

Main Results:

  • Mean distances from the SPF to landmarks including the nasal floor, choanal arch, and maxillary line were established.
  • No significant differences were found between right and left sides.
  • Females exhibited significantly shorter mean distances to the nasal floor, choanal arch, and posterior fontanel compared to males.

Conclusions:

  • Preoperative CT provides accessible, dependable bony landmarks for endoscopic SPF localization.
  • These measurements should be incorporated into preoperative CT assessments for procedures involving the SPF, such as sphenopalatine artery ligation.