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

Inertia Tensor01:24

Inertia Tensor

1.1K
The concept of the inertia tensor is employed to depict the mass distribution and rotational inertia of a solid or rigid object. This tensor is expressed through a three-by-three matrix. Each component within this matrix corresponds to varying moments of inertia about specific axes.
The diagonal components of the inertia tensor matrix represent the moments of inertia concerning the principal axes of the object. These primary axes are defined as the axes where the object experiences the least...
1.1K
Angular Momentum01:21

Angular Momentum

768
Angular momentum characterizes an object's rotational motion and is defined as the moment of its linear momentum about a specified point O. When a particle moves along a curved path in the x-y plane, the scalar formulation calculates the magnitude of its angular momentum, utilizing the moment arm (d), representing the perpendicular distance from point O to the line of action of the linear momentum. Despite being scalar in formulation, angular momentum is inherently a vector quantity. Its...
768
Fischer Projections02:18

Fischer Projections

16.4K
Learning to draw Fischer projections of molecules and understanding their relevance plays a crucial role in the visual depiction of organic molecules. A Fischer projection is a two-dimensional projection on a planar surface to simplify the three-dimensional wedge–dash representation of molecules. This is especially helpful in the case of molecules with multiple chiral centers that can be difficult to draw. Here, all the bonds of interest are represented as horizontal or vertical lines. While...
16.4K
Beams01:30

Beams

1.8K
Beams are integral components of structural engineering and construction, designed to support loads applied at various points along their length. These long, straight members can be classified based on geometry, cross-section, support type, and equilibrium condition.
Based on geometry, beams can be straight, tapered, or curved. Straight beams are the most common type and have a constant cross-section throughout their length. Tapered beams, on the other hand, have a varying cross-section along...
1.8K
Angular Velocity and Displacement01:08

Angular Velocity and Displacement

22.4K
Uniform circular motion is motion in a circle at a constant speed. Although this is the simplest case of rotational motion, it is very useful for many situations and is used to introduce rotational variables. When a particle is moving in a circle, the coordinate system is fixed and serves as a frame of reference to define the particle’s position. Its position vector from the origin of the circle to the particle sweeps out the angle θ, which increases in the counterclockwise direction...
22.4K
Conservation of Angular Momentum01:09

Conservation of Angular Momentum

15.9K
A system's total angular momentum remains constant if the net external torque acting on the system is zero. Considering a system that consists of n tiny particles, the angular momentum of any tiny particle may change, but the system's total angular momentum would remain constant. The principle of conservation of angular momentum only considers the net external torque acting on the system. While there are internal forces exerted by different particles within the system that also produce...
15.9K

You might also read

Related Articles

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

Sort by
Same author

Genetic structure and plumage color candidate genes of Yunnan Partridge duck revealed by whole genome resequencing.

Poultry science·2026
Same author

Alkaline woody peat shifts CO<sub>2</sub> emissions to CH<sub>4</sub> by modulating microbial cross-feeding in Cd-contaminated paddy soil.

Journal of hazardous materials·2026
Same author

Toxicological evaluation of bioengineered salidroside produced by a novel method.

Toxicology reports·2026
Same author

Adaptive Sliding Mode with Finite-Time Convergence for Synchronized Hydraulic Multi-Arm Systems.

Sensors (Basel, Switzerland)·2026
Same author

Quercetin rejuvenates aged adipose progenitor cells by attenuating inflammatory pathways.

Experimental gerontology·2026
Same author

TAPT1 interacts with SUCO to maintain the homeostasis of newly synthesized proteins and brain development in mice.

Proceedings of the National Academy of Sciences of the United States of America·2025

Related Experiment Video

Updated: Jan 21, 2026

Contrast-Matching Detergent in Small-Angle Neutron Scattering Experiments for Membrane Protein Structural Analysis and Ab Initio Modeling
10:27

Contrast-Matching Detergent in Small-Angle Neutron Scattering Experiments for Membrane Protein Structural Analysis and Ab Initio Modeling

Published on: October 21, 2018

13.0K

Scattering measurement and estimation in angular sequence for cone-beam CT based on projection structural tensor and

Fuqiang Yang1, Dinghua Zhang1, Hua Zhang1

  • 1School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, China.

Journal of X-Ray Science and Technology
|July 30, 2019
PubMed
Summary

This study introduces an improved algorithm for cone-beam computed tomography (CBCT) to reduce scattering artifacts. The method enhances image quality by accurately modeling and correcting scatter noise, leading to significant improvements in reconstructed images.

Keywords:
Scattering estimationangular sequencecone-beam computed tomographycorrected projectionstructural tensor

More Related Videos

A Rapid and Chemical-free Hemoglobin Assay with Photothermal Angular Light Scattering
05:18

A Rapid and Chemical-free Hemoglobin Assay with Photothermal Angular Light Scattering

Published on: December 7, 2016

10.1K
Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations
12:09

Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations

Published on: January 8, 2013

14.1K

Related Experiment Videos

Last Updated: Jan 21, 2026

Contrast-Matching Detergent in Small-Angle Neutron Scattering Experiments for Membrane Protein Structural Analysis and Ab Initio Modeling
10:27

Contrast-Matching Detergent in Small-Angle Neutron Scattering Experiments for Membrane Protein Structural Analysis and Ab Initio Modeling

Published on: October 21, 2018

13.0K
A Rapid and Chemical-free Hemoglobin Assay with Photothermal Angular Light Scattering
05:18

A Rapid and Chemical-free Hemoglobin Assay with Photothermal Angular Light Scattering

Published on: December 7, 2016

10.1K
Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations
12:09

Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations

Published on: January 8, 2013

14.1K

Area of Science:

  • Medical Imaging
  • Image Processing
  • Computational Imaging

Background:

  • Cone-beam computed tomography (CBCT) is susceptible to image artifacts and noise caused by X-ray scattering.
  • Accurate scatter estimation is crucial for high-quality CBCT image reconstruction.

Purpose of the Study:

  • To develop and validate a novel algorithm for reducing scatter noise in CBCT images.
  • To improve the image quality of CBCT reconstructions by addressing artifacts from scattering.

Main Methods:

  • Utilized structural tensor analysis of projection data to estimate object structure and scattering.
  • Calculated projection gradients to determine object edges and regional scattering characteristics.
  • Modeled scattering distribution regionally and interpolated scatter information across projection angles.

Main Results:

  • The proposed algorithm significantly reduced artifacts and noise from scattering in CBCT images.
  • Demonstrated substantial improvements in image quality metrics: RMSE reduced by up to 39.8%, PSNR increased by up to 56.7%, and UQI increased by up to 262.3%.
  • Validated performance using polychromatic X-ray and experimental #Wheel and #Cylinder datasets.

Conclusions:

  • The developed scattering estimation algorithm effectively enhances CBCT image quality.
  • The method provides a robust approach for artifact reduction in medical imaging.
  • Results indicate superior performance compared to existing methods for scatter correction.