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[Fundamental Study on Heavy Ion CT Using Pencil Beam Scanning Method]

Toshiyuki Kohno1, Tomohiro Fujiwara, Yumiko Ohno

  • 1Department of Energy Sciences, Tokyo Institute of Technology.

Igaku Butsuri : Nihon Igaku Butsuri Gakkai Kikanshi = Japanese Journal of Medical Physics : an Official Journal of Japan Society of Medical Physics
|May 24, 2003
PubMed
Summary

This study demonstrates the feasibility of heavy ion computed tomography (CT) for material analysis. Researchers achieved spatial resolution under 2 mm, showing potential for advanced imaging applications.

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Area of Science:

  • Medical Physics
  • Imaging Technology
  • Materials Science

Background:

  • Heavy ion computed tomography (CT) offers unique imaging properties.
  • Investigating its feasibility is crucial for advancing diagnostic and analytical capabilities.

Purpose of the Study:

  • To assess the feasibility of heavy ion CT.
  • To establish a pencil beam scanning method for material analysis.
  • To evaluate system performance and spatial resolution.

Main Methods:

  • Utilized carbon and helium ions for irradiation of polyethylene and Lucite samples.
  • Employed a BGO scintillator and plastic scintillators for residual beam energy measurement.
  • Implemented transverse scanning and CT reconstruction for image generation.

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Main Results:

  • Achieved a spatial resolution of less than 2 mm.
  • Electron density ratios of various materials were accurately determined.
  • Demonstrated good agreement between experimental and calculated values.

Conclusions:

  • Heavy ion CT is a feasible technique for material characterization.
  • The established method shows promise for high-resolution imaging.
  • Potential applications in scientific research and material science.