3D-imaging using micro-PIXE

K. Ishii, S. Matsuyama, Y. Watanabe, Y. Kawamura, T. Yamaguchi, R. Oyama, G. Momose, A. Ishizaki, H. Yamazaki, Y. Kikuchi

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We have developed a 3D-imaging system using characteristic X-rays produced by proton micro-beam bombardment. The 3D-imaging system consists of a micro-beam and an X-ray CCD camera of 1 mega pixels (Hamamatsu photonics C8800X), and has a spatial resolution of 4 μm by using characteristic Ti-K-X-rays (4.558 keV) produced by 3 MeV protons of beam spot size of ∼1 μm. We applied this system, namely, a micron-CT to observe the inside of a living small ant's head of ∼1 mm diameter. An ant was inserted into a small polyimide tube the inside diameter and the wall thickness of which are 1000 and 25 μm, respectively, and scanned by the micron-CT. Three dimensional images of the ant's heads were obtained with a spatial resolution of 4 μm. It was found that, in accordance with the strong dependence on atomic number of photo ionization cross-sections, the mandibular gland of ant contains heavier elements, and moreover, the CT-image of living ant anaesthetized by chloroform is quite different from that of a dead ant dipped in formalin.

Original languageEnglish
Pages (from-to)64-68
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-2 SPEC. ISS.
Publication statusPublished - 2007 Feb 1


  • 3D-CT
  • Micron-CT
  • PIXE
  • X-ray CCD camera

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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