Monitoring 3D dose distributions in proton therapy by reconstruction using an iterative method

Young Hak Kim, Changyeon Yoon, Won Ho Lee

Research output: Contribution to journalArticle

Abstract

The Bragg peak of protons can be determined by measuring prompt γ-rays. In this study, prompt γ-rays detected by single-photon emission computed tomography with a geometrically optimized collimation system were reconstructed by an iterative method. The falloff position by iterative method (52.48 mm) was most similar to the Bragg peak (52 mm) of an 80 MeV proton compared with those of back-projection (54.11 mm) and filtered back-projection (54.91 mm) methods. Iterative method also showed better image performance than other methods.

Original languageEnglish
Pages (from-to)33-39
Number of pages7
JournalApplied Radiation and Isotopes
Volume114
DOIs
Publication statusPublished - 2016 Aug 1

Keywords

  • Bragg peak
  • Iterative reconstruction method
  • Prompt γ-Rays
  • Proton therapy
  • Single-Photon Emission Computed Tomography (SPECT)

ASJC Scopus subject areas

  • Radiation

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