Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Topographic Surveying and Contours01:29

Topographic Surveying and Contours

953
Topographic surveying is critical for documenting the Earth's surface, focusing on capturing elevations, slopes, and natural and man-made features. It is essential in construction planning, water resource management, and land-use analysis. The primary outcome of such surveys is a topographic map, which uses contour lines to visually represent the shape and slope of the terrain, providing valuable insights into the landscape's characteristics.Contour lines are fundamental to understanding the...
953
Tooth Anatomy01:21

Tooth Anatomy

2.2K
The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or...
2.2K
Hybrid Zones02:29

Hybrid Zones

21.9K
Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
21.9K
Hybridization of Atomic Orbitals I03:24

Hybridization of Atomic Orbitals I

67.3K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
67.3K
Hybridization of Atomic Orbitals II03:35

Hybridization of Atomic Orbitals II

49.0K
sp3d and sp3d 2 Hybridization
49.0K
Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

325
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
325

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Immunosuppressive therapies adversely affect blood biochemical parameters in patients with inflammatory bowel disease: a meta-analysis.

The Journal of international medical research·2019
Same author

Facile synthesis of Ag-CuO/SBA-15 for aerobic epoxidation of olefins with high activity.

Nanotechnology·2019
Same author

Reinforcement of Polylactic Acid for Fused Deposition Modeling Process with Nano Particles Treated Bamboo Powder.

Polymers·2019
Same author

Comparison of deep learning and human observer performance for detection and characterization of simulated lesions.

Journal of medical imaging (Bellingham, Wash.)·2019
Same author

Bending Flexibility of Moso Bamboo (<i>Phyllostachys Edulis</i>) with Functionally Graded Structure.

Materials (Basel, Switzerland)·2019
Same author

CT Super-Resolution GAN Constrained by the Identical, Residual, and Cycle Learning Ensemble (GAN-CIRCLE).

IEEE transactions on medical imaging·2019

Related Experiment Video

Updated: Feb 1, 2026

Studying Orthodontic Tooth Movement in Mice
07:17

Studying Orthodontic Tooth Movement in Mice

Published on: August 2, 2024

1.6K

Accurate tooth segmentation with improved hybrid active contour model.

Yuanjun Wang1,2, Shiwei Liu1, Ge Wang1

  • 1School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People's Republic of China.

Physics in Medicine and Biology
|December 8, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces a novel hybrid active contour model for accurate tooth root segmentation from cone beam computed tomography (CBCT) images. The method enhances 3D dental models, improving orthodontic diagnosis and treatment planning.

More Related Videos

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
07:32

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

Published on: February 23, 2024

1.9K
Digital Hybrid Model Preparation for Virtual Planning of Reconstructive Dentoalveolar Surgical Procedures
09:10

Digital Hybrid Model Preparation for Virtual Planning of Reconstructive Dentoalveolar Surgical Procedures

Published on: August 5, 2021

2.3K

Related Experiment Videos

Last Updated: Feb 1, 2026

Studying Orthodontic Tooth Movement in Mice
07:17

Studying Orthodontic Tooth Movement in Mice

Published on: August 2, 2024

1.6K
Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
07:32

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

Published on: February 23, 2024

1.9K
Digital Hybrid Model Preparation for Virtual Planning of Reconstructive Dentoalveolar Surgical Procedures
09:10

Digital Hybrid Model Preparation for Virtual Planning of Reconstructive Dentoalveolar Surgical Procedures

Published on: August 5, 2021

2.3K

Area of Science:

  • Medical Imaging
  • Computer-Aided Diagnosis
  • Biomedical Engineering

Background:

  • 3D tooth models from dental computed tomography (CT) are crucial for orthodontic diagnosis and treatment planning.
  • Cone beam computed tomography (CBCT) is widely used due to its high resolution and low radiation.
  • Challenges in CBCT include low signal-to-noise ratio, leading to under-segmentation and false boundaries of tooth roots.

Purpose of the Study:

  • To develop a hybrid active contour model for accurate tooth root segmentation.
  • To overcome limitations of existing methods in segmenting tooth roots from CBCT images.
  • To enhance the accuracy of 3D tooth models for dental applications.

Main Methods:

  • A hybrid active contour model in a variational level set formulation was developed.
  • The model incorporates multi-scale local likelihood image fitting (LLIF), adaptive weighted prior shape constraint, and reaction-diffusion (RD) regularization energy terms.
  • Initial shape and intensity information are used for layer-by-layer enhancement and shape constraint.

Main Results:

  • The proposed method accurately segments tooth roots by enhancing contrast and overcoming edge fuzziness and intensity inhomogeneity.
  • The adaptive shape prior term improved contour evolution and topology changes.
  • A new segmentation evaluation metric was proposed for quantitative validation.

Conclusions:

  • The hybrid level set model significantly improves tooth root segmentation accuracy compared to traditional methods.
  • This technique offers a more reliable tool for constructing accurate 3D tooth models for dental applications.
  • The method addresses key challenges in CBCT-based dental image segmentation.