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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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Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
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Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
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Updated: Mar 3, 2026

Author Spotlight: An Efficient and Robust Software for Automated Fusion of Multiple Preclinical Imaging Modalities
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Radiography registration for mosaic tomography.

R F C Vescovi1, M B Cardoso2, E X Miqueles2

  • 1Institute Física Gleb-Wataghin (IFGW), University of Campinas, SP, Brazil.

Journal of Synchrotron Radiation
|April 29, 2017
PubMed
Summary
This summary is machine-generated.

A new hybrid method stitches X-ray computed tomography (CT) datasets, extending the field of view without changing resolution. This technique uses Fourier phase correlation for accurate image stitching in synchrotron tomography.

Keywords:
computed tomographymicrotomographymosaic tomographynon-limited field of view

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Area of Science:

  • Materials Science
  • Imaging Science
  • Physics

Background:

  • X-ray computed tomography (CT) is a powerful imaging technique.
  • Extending the field of view in CT is crucial for analyzing larger samples.
  • Current methods may require changes to experimental setup or resolution.

Purpose of the Study:

  • To develop and validate a hybrid method for stitching X-ray CT datasets.
  • To enable field of view extension without compromising spatial resolution or experimental setup.
  • To demonstrate the feasibility of the method in a synchrotron tomography beamline.

Main Methods:

  • A hybrid stitching approach combining Fourier phase correlation and residue-based correlation for frame registration.
  • Utilizing experimental motor position readouts to define correlation limits for accuracy.
  • Blending partial datasets in sinogram space for compatibility with standard CT reconstructors.
  • Demonstrating projection space blending for creating a single, unified dataset.

Main Results:

  • Successfully extended the field of view of X-ray CT datasets.
  • Maintained high spatial resolution and the original experimental setup.
  • Achieved accurate frame registration using the proposed correlation techniques.
  • Demonstrated the ability to reconstruct high-resolution slices even with limited projections.

Conclusions:

  • The proposed hybrid stitching method is feasible for synchrotron tomography at micrometer resolution.
  • This technique offers a way to enhance the field of view of CT systems.
  • The method is compatible with standard CT reconstruction algorithms.