Related Experiment Video

Updated: Jan 24, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
04:40

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans

Published on: August 28, 2018

16.0K

Course of the mandibular canal in hemifacial microsomia: a retrospective computed tomography study

Zhixu Liu1, Jian Cao1, Yifeng Qian1

  • 1Department of Oral and Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China.

Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
|May 18, 2019
PubMed
Abstract

Insights

The mandibular canal

Area of Science:

  • Anatomy
  • Oral and Maxillofacial Surgery
  • Medical Imaging

Background:

  • Hemifacial microsomia (HM) is a congenital condition affecting facial development.
  • Understanding the anatomy of the mandibular canal is crucial for surgical planning.
  • The inferior alveolar nerve (IAN) runs through the mandibular canal, vital for sensation and surgical safety.

Purpose of the Study:

  • To investigate the anatomical course of the mandibular canal in patients with hemifacial microsomia (HM).
  • To correlate variations in the mandibular canal's anatomy with different Pruzansky-Kaban classifications of HM.
  • To assess the presence and location of the antilingula in HM patients.

Main Methods:

  • Retrospective analysis of 77 patients with hemifacial microsomia.
  • Classification of patients based on the Pruzansky-Kaban system.
  • 3D reconstruction of the mandible and mandibular canal using computed tomography (CT) data.

Main Results:

  • No significant differences in mandibular canal course were found in Pruzansky-Kaban types I and IIa HM.
  • Abnormalities in the mandibular canal's entrance and route were observed in types IIb and III HM.
  • The antilingula was identified in types IIb and III HM, more frequently in type III.

Conclusions:

  • The anatomical course of the mandibular canal varies in patients with Pruzansky-Kaban type IIb and III hemifacial microsomia.
  • Pre-surgical evaluation of the mandibular canal's course is recommended in HM patients.
  • This evaluation can help prevent damage to the inferior alveolar nerve (IAN) during surgical interventions.

More Related Videos

High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals11:09

High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals

Published on: December 16, 2022

4.2K
Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph05:32

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Published on: February 21, 2025

678

Related Concept Videos

Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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...
321
Computed Tomography01:10

Computed Tomography

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.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
8.1K
Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
532
Design Example: Traverse Angle Computations01:25

Design Example: Traverse Angle Computations

Traverse angle computations are a critical component of surveying, used to compute the internal angles within a closed traverse. A traverse consists of a series of connected lines forming a closed loop, often used for land boundary delineation or mapping. Calculating the internal angles ensures accuracy in the traverse geometry and is essential for checking survey data integrity.The process begins with known azimuths and bearings of the traverse sides. Internal angles at each vertex are...
317
Area Computation by the Alternative Coordinate Method01:24

Area Computation by the Alternative Coordinate Method

The alternative coordinate method, also known as the Shoelace Formula, is a technique for determining the area of a traverse using Cartesian coordinates. This method relies on the sequential arrangement of x and y coordinates for each point of the shape, ensuring accuracy and ease of application.In this approach, each corner's x and y coordinates are listed as fractions, with the x-coordinate as the numerator and the y-coordinate as the denominator. These coordinates are arranged sequentially...
577
Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
7.0K