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 Experiment Videos

Lambda tomography with discontinuous scanning trajectories.

Hengyong Yu1, Yuchuan Wei, Yangbo Ye

  • 1Biomedical Imaging Division, VT-WFU School of Biomedical Engineering, Virginia Tech, Blacksburg, VA 24061, USA.

Physics in Medicine and Biology
|August 1, 2007
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

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
Same journal

Effective contrast-enhanced preprocessing for intracranial artery segmentation in digital subtraction angiography.

Physics in medicine and biology·2026
Same journal

Improving Plan Quality in Adaptive Proton Therapy Using an Interactive Dose Modification Tool.

Physics in medicine and biology·2026
Same journal

Technical Note: Real-Time MLC Control and Latency Measurement Optimization with External Verification.

Physics in medicine and biology·2026
Same journal

Fetus-Specific Hematopoietic Stem Cell Dosimetry Framework for Leukemia-Relevant Target Cells During Prenatal Development.

Physics in medicine and biology·2026
Same journal

Deep learning-based dose prediction to enhance planning efficiency in cervical brachytherapy with hybrid applicators.

Physics in medicine and biology·2026
Same journal

Corrigendum: Referenceless MR thermometry-a comparison of five methods (2017<i>Phys. Med. Biol</i>.<b>62</b>1-16).

Physics in medicine and biology·2026
See all related articles

This study presents a new method for exact Lambda Tomography (LT) reconstruction using the Calderon operator (CO). The proposed scheme enables precise image reconstruction with reduced radiation dose and improved imaging geometry.

Area of Science:

  • Medical Imaging
  • Computational Mathematics
  • Image Reconstruction

Background:

  • Lambda Tomography (LT) is a crucial local reconstruction technique for minimizing radiation exposure and adapting to limited imaging geometries.
  • The Calderon operator (CO) plays a key role in the theoretical underpinnings of tomographic reconstruction.

Purpose of the Study:

  • To theoretically analyze the Calderon operator (CO) and establish necessary conditions for exact Lambda Tomography (LT) reconstruction.
  • To propose a general scheme for constructing exact LT formulas using the 2D CO with multi-segment trajectories.
  • To derive corresponding 3D cone-beam formulas within the Feldkamp framework.

Main Methods:

  • Theoretical analysis of the Calderon operator (CO) in 2D and 3D.
  • Development of a general scheme for exact LT reconstruction formulae based on the 2D CO.

Related Experiment Videos

  • Extension of 2D formulas to 3D cone-beam reconstruction using the Feldkamp framework.
  • Simulation-based verification of the proposed reconstruction scheme.

    • Main Results:

    • Necessary conditions for exact LT reconstruction were derived using 2D and 3D Calderon operators.
    • A general scheme for constructing exact LT formulas with multi-segment trajectories was successfully proposed.
    • A triple-segment case illustrated the derivation of 3D cone-beam formulas from 2D CO-based formulas.
    • Simulation results confirmed the accuracy and advantages of the developed scheme.

    Conclusions:

    • The proposed scheme provides a robust method for exact Lambda Tomography reconstruction.
    • The findings contribute to advancing low-dose and limited-geometry imaging techniques.
    • The study validates the utility of the Calderon operator in developing precise tomographic reconstruction algorithms.