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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
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The human larynx, often referred to as the voice box, is an intricate organ located in the neck. It serves as a pathway for air to enter the lungs during respiration and is an essential component of voice production.
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Laryngeal Dimensions: A Computed Tomography Study.

Mohammad Waheed El-Anwar1, Ali Awad1, Atef Hussain1

  • 1Department of Otolaryngology-Head and Neck Surgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt.

International Archives of Otorhinolaryngology
|October 13, 2025
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Summary
This summary is machine-generated.

This study measured larynx and vocal cord dimensions using CT scans, finding significant differences between males and females. These CT measurements are crucial for surgical planning and training.

Keywords:
computed tomographylarynxsubglotticthyroid cartilagevocal fold

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Area of Science:

  • Anatomy
  • Radiology
  • Otolaryngology

Background:

  • Computed tomography (CT) details of laryngeal dimensions are not extensively documented in existing literature.
  • Establishing a database of CT measurements for the larynx across different ethnic groups is important.
  • Preoperative CT details are critical for any laryngeal procedures.

Purpose of the Study:

  • To measure and report various dimensions of the larynx and vocal cords using CT.
  • To establish normative data for laryngeal dimensions.
  • To provide valuable information for surgical planning and resident training.

Main Methods:

  • Analysis of 100 CT scans of the larynx (200 vocal cords).
  • Axial images were acquired and multiplanar reformation was used to obtain detailed measurements.
  • Measurements included anteroposterior (AP) vocal fold length (VFL) and subglottic area dimensions.

Main Results:

  • The mean AP vocal fold length (VFL) was 16.8 mm, significantly longer in males (18.4 mm) than females (15.3 mm).
  • The mean subglottic area width was 14.88 mm, significantly wider in males (15.6 mm) than females (14.18 mm).
  • A positive correlation was observed between subglottic area diameters and VFL.

Conclusions:

  • This study enhances surgeon and radiologist awareness of laryngeal dimensions.
  • The findings can assist residents in training by providing detailed anatomical data.
  • CT-derived laryngeal measurements are valuable for clinical practice and education.