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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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Electron Microscope Tomography and Single-particle Reconstruction01:07

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
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Related Experiment Video

Updated: Oct 22, 2025

Scaled Anatomical Model Creation of Biomedical Tomographic Imaging Data and Associated Labels for Subsequent Sub-surface Laser Engraving SSLE of Glass Crystals
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On a Method For Reconstructing Computed Tomography Datasets from an Unstable Source.

Nicholas Stull1, Josh McCumber2, Lawrence D'Aries3

  • 1Los Alamos National Laboratory, Los Alamos, NM 87545, USA.

Journal of Imaging
|August 30, 2021
PubMed
Summary
This summary is machine-generated.

Strategies are presented to reconstruct neutron computed tomography data despite beam instability. This method avoids discarding scans, saving time and resources for critical imaging applications.

Keywords:
computed tomographyimage processingneutron radiography

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Area of Science:

  • Physics
  • Materials Science
  • Engineering

Background:

  • Neutron computed tomography (NCT) is crucial for materials analysis and non-destructive testing.
  • Source reliability is a significant challenge in long-duration NCT scans, particularly at facilities like Los Alamos Neutron Science Center (LANSCE).
  • Discarding scans due to beam instability is time-consuming and costly.

Purpose of the Study:

  • To develop and demonstrate a method for successful computed tomography data reconstruction from unstable neutron sources.
  • To mitigate the economic and temporal impacts of beam instability in NCT.

Main Methods:

  • Utilized a high-energy neutron tomography dataset of a simulated munition acquired at LANSCE.
  • Applied novel strategies to reconstruct data acquired from an unstable neutron source.
  • Demonstrated the general applicability of the method to unstable X-ray computed tomography sources.

Main Results:

  • Successfully reconstructed computed tomography data despite source instability.
  • Validated the effectiveness of the proposed strategies for handling beam fluctuations.
  • Showcased the method's potential for broader application in imaging.

Conclusions:

  • The presented strategies enable successful NCT data reconstruction from unstable sources, preserving scan integrity.
  • This approach offers a practical solution to a critical issue in long-term neutron imaging.
  • The method is adaptable for use with unstable X-ray computed tomography systems, enhancing imaging flexibility.