Characterization of high-sensitivity metal oxide semiconductor field effect transistor dosimeters system and LiF: Mg,Cu,P thermoluminescence dosimeters for use in diagnostic radiology

S. L. Dong, T. C. Chu, G. Y. Lan, T. H. Wu, Y. C. Lin, J. S. Lee

研究成果: 雜誌貢獻文章同行評審

36 引文 斯高帕斯(Scopus)

摘要

Monitoring radiation exposure during diagnostic radiographic procedures has recently become an area of interest. In recent years, the LiF:Mg,Cu,P thermoluminescence dosimeter (TLD-100H) and the highly sensitive metal oxide semiconductor field effect transistor (MOSFET) dosimeter were introduced as good candidates for entrance skin dose measurements in diagnostic radiology. In the present study, the TLD-100H and the MOSFET dosimeters were evaluated for sensitivity, linearity, energy, angular dependence, and post-exposure response. Our results indicate that the TLD-100H dosimeter has excellent linearity within diagnostic energy ranges and its sensitivity variations were under 3% at tube potentials from 40 Vp to 125 kVp. Good linearity was also observed with the MOSFET dosimeter, but in low-dose regions the values are less reliable and were found to be a function of the tube potentials. Both dosimeters also presented predictable angular dependence in this study. Our findings suggest that the TLD-100H dosimeter is more appropriate for low-dose diagnostic procedures such as chest and skull projections. The MOSFET dosimeter system is valuable for entrance skin dose measurement with lumbar spine projections and certain fluoroscopic procedures.
原文英語
頁(從 - 到)883-891
頁數9
期刊Applied Radiation and Isotopes
57
發行號6
DOIs
出版狀態已發佈 - 十二月 1 2002
對外發佈

Keywords

  • Diagnostic radiology
  • MOSFET dosimeter
  • Radiation detection
  • TLD dosimeter

ASJC Scopus subject areas

  • 輻射

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