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Fabrication and Characterization of Optical Tissue Phantoms Containing Macrostructure
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The reference phantoms: voxel vs polygon.

C H Kim1, Y S Yeom2, T T Nguyen2

  • 1Department of Nuclear Engineering, Hanyang University, 133-791, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea chkim@hanyang.ac.kr.

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|March 13, 2016
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Summary
This summary is machine-generated.

The International Commission on Radiological Protection is converting voxel phantoms to a high-quality polygon-mesh format. This upgrade will improve dose coefficient calculations for small tissues and weakly penetrating radiation.

Keywords:
Effective dosePolygon meshReference phantomVoxel

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Area of Science:

  • Medical Physics
  • Radiological Protection
  • Computational Modeling

Background:

  • Current ICRP Publication 110 voxel phantoms have limited resolution for small tissues.
  • This limitation affects dose coefficient accuracy, especially for weakly penetrating radiation.
  • Separate models are used for thin target regions in organs.

Purpose of the Study:

  • To convert ICRP Publication 110 phantoms to a high-quality polygon-mesh (PM) format.
  • To include all source and target regions, including thin tissues (8-40 µm).
  • To enhance accuracy of dose coefficient calculations.

Main Methods:

  • Conversion of existing voxel phantoms to polygon-mesh format.
  • Integration of detailed source and target regions.
  • Development of high-resolution phantom models.

Main Results:

  • Expected to yield similar dose coefficients for penetrating radiation compared to Publication 110 phantoms.
  • Anticipated to provide more accurate dose coefficients for weakly penetrating radiation and small tissues.
  • PM phantoms will be deformable for creating various postures.

Conclusions:

  • The polygon-mesh phantom conversion project aims to improve ICRP dose coefficient calculations.
  • Enhanced phantoms will offer greater accuracy for specific tissues and radiation types.
  • The new format facilitates versatile applications, including accidental dose assessment.