Calculations of specific absorbed fractions of the gastrointestinal tract using a realistic whole body tomographic model

X. G. Xu*, T. C. Chao

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

15 Scopus citations

Abstract

Assessment of organ doses from internally deposited radionuclides involves the use of predetermined specific absorbed fractions (SAFs). Many tabulations of SAFs have been derived from Monte Carlo transport simulations using stylized computational models that are not fully realistic of human internal organ anatomy. This paper presents the results of a study to calculate SAFs in the gastrointestinal (GI) tract using a recently developed tomographic model VIP-Man and the EGS4 Monte Carlo radiation transport code. Results show that, for some energies and source-target combinations, considerable discrepancies exist between these results and those from earlier studies, suggesting a need to evaluate existing data carefully by comparison with realistic models.

Original languageEnglish
Pages (from-to)431-436
Number of pages6
JournalCancer Biotherapy and Radiopharmaceuticals
Volume18
Issue number3
DOIs
StatePublished - 2003
Externally publishedYes

Keywords

  • Dosimetry
  • Monte Carlo
  • Phantom
  • SAFs

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