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

Adjusting a Traverse01:12

Adjusting a Traverse

37
In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...
37

You might also read

Related Articles

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

Sort by
Same author

Abnormal structural connectivity-functional connectivity coupling beyond the cortex in patients with chronic migraine.

The journal of headache and pain·2026
Same author

SpNeigh: spatial neighborhood and differential expression analysis for high-resolution spatial transcriptomics.

NAR genomics and bioinformatics·2026
Same author

Effect of Incorporating L-Shaped Folded Metal Aggregates on the Performance of Asphalt Mixtures.

Materials (Basel, Switzerland)·2025
Same author

Fibroblast hierarchy dynamics during mammary gland morphogenesis and tumorigenesis.

The EMBO journal·2025
Same author

MCL‑1 safeguards activated hair follicle stem cells to enable adult hair regeneration.

Nature communications·2025
Same author

Benchmarking cell type annotation methods for 10x Xenium spatial transcriptomics data.

BMC bioinformatics·2025

Related Experiment Video

Updated: May 14, 2025

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
06:09

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

3.0K

Self-calibration method for spiral CT geometric parameters based on data redundancy conditions.

Bozhong Tan, Jinming Cheng, Qingguo Yang

    Optics Express
    |April 12, 2025
    PubMed
    Summary

    This study introduces a self-calibration method for spiral CT geometry, improving image quality and measurement accuracy. The technique accurately calibrates key geometric parameters using data redundancy for reliable CT system performance.

    More Related Videos

    Robotized Testing of Camera Positions to Determine Ideal Configuration for Stereo 3D Visualization of Open-Heart Surgery
    05:12

    Robotized Testing of Camera Positions to Determine Ideal Configuration for Stereo 3D Visualization of Open-Heart Surgery

    Published on: August 12, 2021

    1.9K
    Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
    10:22

    Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

    Published on: September 7, 2019

    8.2K

    Related Experiment Videos

    Last Updated: May 14, 2025

    Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
    06:09

    Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

    Published on: March 12, 2021

    3.0K
    Robotized Testing of Camera Positions to Determine Ideal Configuration for Stereo 3D Visualization of Open-Heart Surgery
    05:12

    Robotized Testing of Camera Positions to Determine Ideal Configuration for Stereo 3D Visualization of Open-Heart Surgery

    Published on: August 12, 2021

    1.9K
    Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
    10:22

    Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

    Published on: September 7, 2019

    8.2K

    Area of Science:

    • Medical Imaging
    • Computed Tomography (CT)
    • Geometric Calibration

    Background:

    • Accurate geometric parameters are crucial for high-quality CT images and precise dimensional measurements.
    • Existing calibration methods may lack precision or efficiency for spiral CT systems.

    Purpose of the Study:

    • To develop and validate a self-calibration method for spiral CT geometry.
    • To enhance the accuracy of CT image reconstruction and dimensional measurements through precise geometric parameter calibration.

    Main Methods:

    • Theoretical analysis to identify geometric relationships for data redundancy in spiral CT.
    • Simulation studies to evaluate the impact of key geometric parameters (source-to-sample distance, detector horizontal offset, detector rotation angle) on data redundancy.
    • Validation using experimental spiral CT scanning with real samples.

    Main Results:

    • The self-calibration method achieved high accuracy: detector horizontal offset (<1 pixel), detector rotation angle (<0.1°), and source-to-sample distance (<0.42%).
    • Noise levels were analyzed for their impact on geometric parameter estimation accuracy.
    • The method demonstrated effectiveness in practical spiral CT applications.

    Conclusions:

    • The proposed self-calibration method based on data redundancy is effective for spiral CT geometry.
    • This technique significantly improves the accuracy of geometric parameter calibration, leading to better CT image quality and measurement precision.