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

Uniform attenuation correction using the frequency-distance principle.

Gengsheng L Zeng1

  • 1Utah Center for Advanced Imaging, Department of Radiology, University of Utah, Salt Lake City, Utah 84108, USA.

Medical Physics
|December 13, 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

Image Reconstruction with Maclaurin Series Expansion.

International journal of biomedical research & practice·2026
Same author

A Higher-Order Ising Model with Gradient-Free Update.

Axioms·2026
Same author

Limited-Angle Tomography Using a Neural Network as the Objective Function.

International journal of biomedical research & practice·2026
Same author

Radon Inversion Reconstruction for Kooshball-Like Sampling Trajectory in Cine.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2025
Same author

Mitigating the Drawbacks of the L<sub>0</sub> Norm and the Total Variation Norm.

Axioms·2025
Same author

One-Step Image Reconstruction for Cine MRI with a Quadratic Constraint.

International journal of biomedical research & practice·2024
Same journal

Decomposition-based harmonization for quantitative PET imaging across scanners and radiotracers.

Medical physics·2026
Same journal

Development and evaluation of an in vivo dose-based monitoring system for electron FLASH radiation therapy.

Medical physics·2026
Same journal

A novel optical respiratory gating system with a hybrid phase-amplitude algorithm for spot-scanning proton therapy.

Medical physics·2026
Same journal

Gamma Knife treatment planning using knowledge-based reinforcement learning.

Medical physics·2026
Same journal

Development and characterization of a novel, small animal external beam irradiator using a clinical high dose rate brachytherapy source.

Medical physics·2026
Same journal

Deep learning-based dose prediction for MR-guided prostate SIB: Supporting rapid feasibility assessment and adaptive editing margin selection.

Medical physics·2026
See all related articles

The frequency-distance principle can correct for uniform attenuation in single photon emission computed tomography (SPECT) for point sources. However, this method is less effective for distributed objects in SPECT imaging.

Area of Science:

  • Medical Imaging
  • Nuclear Medicine
  • Image Reconstruction

Background:

  • Single photon emission computed tomography (SPECT) is a nuclear medicine imaging technique.
  • SPECT imaging is affected by distance-dependent collimator blurring and uniform attenuation.
  • The frequency-distance principle (FDP) has been used to compensate for collimator blurring in SPECT.

Purpose of the Study:

  • To investigate the application of the frequency-distance principle (FDP) for correcting uniform attenuation in SPECT.
  • To evaluate the efficacy of FDP-based attenuation correction for different object types.

Main Methods:

  • Utilized the frequency-distance principle (FDP), a relationship between object-detector distance and the slope of the sinogram's 2D Fourier transform.
  • Employed computer simulations to test the FDP-based attenuation correction method.

Related Experiment Videos

  • Assessed performance using objects modeled as point sources and distributed sources.

    • Main Results:

    • The frequency-distance principle demonstrated effectiveness in correcting uniform attenuation for point sources in simulated SPECT data.
    • The FDP-based method showed limitations and did not perform well for distributed objects in SPECT simulations.
    • Simulation results highlight object-dependent performance of the FDP for attenuation correction.

    Conclusions:

    • The frequency-distance principle shows potential for uniform attenuation correction in specific SPECT scenarios (point sources).
    • Further research is needed to adapt or refine the FDP for accurate attenuation correction of distributed objects in SPECT.
    • The study underscores the importance of object characteristics in the performance of image correction techniques in SPECT.