Monte Carlo simulation-based feasibility study of a dose-area product meter built into a collimator for diagnostic X-ray

Yongsu Yoon, Hyunji Kim, Min Seok Park, Jungsu Kim, Deoknam Seo, Inseok Choi, Hoiwoun Jeong, Jung Min Kim

Research output: Contribution to journalArticle


According to the International Electro-technical Commission, manufacturers of X-ray equipment should indicate the number of radiation doses to which a patient can be exposed. Dose-area product (DAP) meters are readily available devices that provide dose indices. Collimators are the most commonly employed radiation beam restrictors in X-ray equipment. DAP meters are attached to the lower surface of a collimator. A DAP meter consists of a chamber and electronics. This separation makes it difficult for operators to maintain the accuracy of a DAP meter. Developing a comprehensive system that has a DAP meter in place of a mirror in the collimator would be effective for measuring, recording the dose and maintaining the quality of the DAP meter. This study was conducted through experimental measurements and a simulation. A DAP meter built into a collimator was found to be feasible when its reading was multiplied by a correction factor.

Original languageEnglish
Article numbernct339
Pages (from-to)421-426
Number of pages6
JournalRadiation Protection Dosimetry
Issue number3
Publication statusPublished - 2014 Dec 1


ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiation
  • Radiology Nuclear Medicine and imaging
  • Public Health, Environmental and Occupational Health

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