Earticle

초록

영어

Microdosimetry does not simply refer to dosimetry with small targets, but rather to dosimetry that accounts for the stochastic nature of energy deposition. The International Commission on Radiation Units and Measurements has proposed using the probability densities of microdosimetric quantities such as lineal energy (y) and specific energy (z) to characterize the radiation fields instead of relying solely on linear energy transfer (LET) and absorbed dose. However, the practical application of microdosimetry remains limited due to significant computational costs associated with evaluating these stochastic quantities in macroscopic contexts such as the human body. To bridge the gap between microdosimetry and macrodosimetry, three approaches have been proposed and implemented: direct integration of track-structure and macroscopic radiation transport codes; integration of a database containing dose-mean values of microdosimetric quantities into macroscopic radiation transport codes; and integration of the analytical microdosimetric function for instantaneously calculating the probability densities of microdosimetric quantities within macroscopic radiation transport codes. This paper comprehensively reviews the conceptual and practical differences between LET and microdosimetric quantities, including their respective computational methodologies. The advantages and limitations of the three approaches are then discussed, followed by a summary of previous research efforts and suggestions for future research directions.

목차

ABSTRACT
Introduction
Difference among LET, Lineal Energy, and Specific Energy
1. Lineal Energy Transfer
2. Lineal Energy
3. Specific Energy
Examples of Lineal-Energy and Specific-Energy Distributions
Computational Approaches to Bridging the Gap between Microdosimetry and Macrodosimetry
1. Direct Integration of Track-Structure and Macroscopic Radiation Transport Codes
2. Integration of the Mean Values of Microdosimetric Quantities with Macroscopic Radiation Transport Codes
3. Integration of Analytical Microdosimetric Functions with Macroscopic Radiation Transport Codes
Summary and Perspectives
Article Information
References

키워드

저자

• Tatsuhiko Sato [ Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Ibaraki, Japan ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  방사선방어학회지 [Journal of Radiation Protection and Research]

• 간기

  계간

• pISSN

  2508-1888

• 수록기간

  1976~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 559 DDC 629