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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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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Related Experiment Video

Updated: Jun 22, 2026

Label-free, High-Resolution 3D Imaging and Machine Learning Analysis of Intestinal Organoids via Low-Coherence Holotomography
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Depth-resolving THz imaging with tomosynthesis.

Naoki Sunaguchi1, Yoshiaki Sasaki, Norihide Maikusa

  • 1Yamagata University, Yonezawa, Yamagata, Japan. kuroiinazuma@gmail.com

Optics Express
|June 10, 2009
PubMed
Summary
This summary is machine-generated.

We developed a 3D imaging method using tomosynthesis and terahertz waves to visualize structures. This technique successfully reproduced pencil-written characters on paper, demonstrating its potential for detailed material analysis.

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Area of Science:

  • Terahertz (THz) imaging
  • 3D imaging techniques
  • Absorption contrast imaging

Background:

  • Computed tomography (CT) provides 3D reconstructions but requires numerous projections.
  • Tomosynthesis offers a lower-projection alternative for 3D imaging.
  • THz waves penetrate various materials, enabling non-destructive analysis.

Purpose of the Study:

  • To demonstrate a depth-resolved 3D imaging technique using tomosynthesis.
  • To develop and apply a THz absorption contrast imaging system.
  • To evaluate the system's capability in reconstructing fine details.

Main Methods:

  • Constructed a tomosynthesis imaging system detecting transmitted continuous THz waves.
  • Applied a backprojection reconstruction method tailored to the system's configuration.
  • Imaged a test sample comprising paper with pencil-written characters.

Main Results:

  • Successfully achieved depth-resolved 3D imaging using tomosynthesis.
  • The THz imaging system reconstructed the test sample with absorption contrast.
  • Pencil-written characters on paper were clearly reproduced in the 3D image.

Conclusions:

  • Tomosynthesis is a viable method for depth-resolved 3D imaging with fewer projections than CT.
  • The developed THz tomosynthesis system can effectively image fine structures.
  • This technique shows promise for non-destructive 3D material characterization.