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Related Concept Videos

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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.
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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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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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The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
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Related Experiment Video

Updated: Dec 25, 2025

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Focused x-ray luminescence computed tomography: experimental studies.

Michael C Lun1, Changqing Li1

  • 1Department of Bioengineering, University of California, Merced, 5200 North Lake Road, Merced, CA 95343, USA.

Proceedings of Spie--The International Society for Optical Engineering
|April 2, 2020
PubMed
Summary

Focused X-ray Luminescence Tomography (FXLT) enhances deep tissue imaging by achieving 94 μm spatial resolution. This advanced technique significantly reduces measurement time for practical molecular imaging applications.

Keywords:
optical imagingoptical tomographytomographic imagingx-ray imagingx-ray luminescence computed tomography

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Area of Science:

  • Biomedical imaging
  • Molecular imaging
  • Optical imaging

Background:

  • X-ray luminescence computed tomography (XLCT) offers deep tissue imaging but faces challenges with long measurement times.
  • Existing focused x-ray beam XLCT systems show promise but haven't fully realized high spatial resolution.
  • Overcoming optical scattering is crucial for effective deep tissue molecular imaging.

Purpose of the Study:

  • To design and evaluate a focused-x-ray luminescence tomography (FXLT) system.
  • To achieve high spatial resolution for deep tissue imaging.
  • To improve the practical applicability of XLCT.

Main Methods:

  • Development of a novel FXLT system utilizing a superfine focused x-ray beam.
  • Detailed description and performance estimation of the designed FXLT system.
  • Numerical simulations to assess the impact of scan step size on spatial resolution.

Main Results:

  • The designed FXLT system achieves a spatial resolution of up to 94 μm.
  • Imaging time was significantly reduced, demonstrated by successful mouse-sized object imaging in 7.5 seconds per section.
  • Numerical simulations confirmed that reducing scan step size further improves spatial resolution.

Conclusions:

  • The developed FXLT system demonstrates significant potential for high-resolution deep tissue molecular imaging.
  • FXLT offers a faster alternative to traditional XLCT, enhancing its clinical applicability.
  • Further optimization through reduced scan step size can lead to even greater spatial resolution improvements.