A monte carlo simulation based on measured tube current modulation data in x-ray computed tomography

M. Inoue, S. Koyama, T. Haba, T. Shibahara

Research output: Contribution to conferencePaper

Abstract

In recent times, almost all X-ray computed tomography (CT) scanners use a tube current modulation (TCM) technique. Hence, examining the effects of TCM on the organ doses of patients is very important. To examine the effects of TCM in detail, we have estimated the organ doses in the TCM CT examination using an anthropomorphic phantom and Electron Gamma Shower ver. 5 (EGS5) Monte Carlo simulation. There are some differences between the measurement and simulation results, especially in dosimeters that were inserted near the surface of the phantom. In this study, therefore, we aimed at revealing the reason for differences between measurement and simulations. In the results of this study, it was revealed that the internal dose profile of the patient varies at every scan in helical scanning. In addition, the variance of internal dose profiles increase as the techniques of CT scanning becomes more complicated.

Original languageEnglish
Pages17-24
Number of pages8
Publication statusPublished - 01-10-2015
Event2015 22nd EGS Users' Meeting in Japan - Tsukuba, Japan
Duration: 03-08-201504-08-2015

Conference

Conference2015 22nd EGS Users' Meeting in Japan
CountryJapan
CityTsukuba
Period03-08-1504-08-15

All Science Journal Classification (ASJC) codes

  • Software

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    Inoue, M., Koyama, S., Haba, T., & Shibahara, T. (2015). A monte carlo simulation based on measured tube current modulation data in x-ray computed tomography. 17-24. Paper presented at 2015 22nd EGS Users' Meeting in Japan, Tsukuba, Japan.