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

Correction for beam hardening in computed tomography.

G T Herman

    Physics in Medicine and Biology
    |January 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed a method to estimate monoenergetic X-ray beam attenuation from polyenergetic beams. This technique improves computed tomography (CT) reconstructions by accounting for beam hardening effects in human tissues.

    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

    Accelerated perturbation-resilient block-iterative projection methods with application to image reconstruction.

    Inverse problems·2013
    Same author

    Perturbation-resilient block-iterative projection methods with application to image reconstruction from projections.

    International transactions in operational research : a journal of The International Federation of Operational Research Societies·2012
    Same author

    Reconstruction from a Few Projections by ℓ(1)-Minimization of the Haar Transform.

    Inverse problems·2011
    Same author

    Boundary detection in multidimensions.

    IEEE transactions on pattern analysis and machine intelligence·2011
    Same author

    Perturbation Resilience and Superiorization of Iterative Algorithms.

    Inverse problems·2010
    Same author

    Volumetric restrictions in single particle 3DEM reconstruction.

    Pattern recognition·2010
    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
    Same journal

    Corrigendum: Measured and Monte Carlo simulated electron backscatter to the monitor chamber for the varian TrueBeam linac (2016<i>Phys. Med. Biol</i>.<b>61</b>8779).

    Physics in medicine and biology·2026
    Same journal

    Corrigendum: 3D range-modulator for scanned particle therapy: development, Monte Carlo simulations and experimental evaluation (2017<i>Phys. Med. Biol</i>.<b>62</b>7075).

    Physics in medicine and biology·2026
    Same journal

    Recent progress in applications of computing to radiotherapy (ICCR 2016).

    Physics in medicine and biology·2026
    Same journal

    Novel TMS coils designed using an inverse boundary element method.

    Physics in medicine and biology·2026
    See all related articles

    Area of Science:

    • Medical Physics
    • Biomedical Imaging
    • Radiology

    Background:

    • Computed tomography (CT) imaging relies on X-ray attenuation measurements.
    • Polyenergetic X-ray beams used in CT undergo spectral changes (beam hardening) as they pass through tissues.
    • Accurate material characterization in CT requires estimating monoenergetic attenuation.

    Purpose of the Study:

    • To develop a method for estimating monoenergetic X-ray beam attenuation from polyenergetic beam measurements.
    • To assess the accuracy of this estimation for diagnostic X-ray spectra through human tissues.
    • To evaluate the impact of beam hardening on CT image reconstruction.

    Main Methods:

    • Investigated the relationship between total attenuation (p) of polyenergetic X-ray beams and the hypothetical total attenuation (m) of monoenergetic beams.

    Related Experiment Videos

  • Developed a simple function f(p) to estimate m.
  • Utilized a mathematical model of a human thorax cross-section for validation.

    • Main Results:

    • A simple function f(p) provides a sufficiently close estimate of monoenergetic beam attenuation (m) for typical diagnostic X-ray spectra.
    • Accurate estimation of m is not achievable by assuming the human body is solely composed of water.
    • Reconstructions using the developed method demonstrated improved accuracy.

    Conclusions:

    • The proposed method effectively estimates monoenergetic X-ray attenuation from polyenergetic beams, crucial for accurate CT.
    • The 'water-only' assumption is insufficient for precise attenuation estimation in CT.
    • This work contributes to better understanding and mitigating beam hardening artifacts in medical imaging.