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    National Tsing Hua University Institutional Repository > 原子科學院  > 生醫工程與環境科學系 > 期刊論文 >  Characterization of high-sensitivity metal oxide semiconductor field effect transistor dosimeters system and LiF : Mg,Cu,P thermoluminescence dosimeters for use in diagnostic radiology


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/40312


    Title: Characterization of high-sensitivity metal oxide semiconductor field effect transistor dosimeters system and LiF : Mg,Cu,P thermoluminescence dosimeters for use in diagnostic radiology
    Authors: Dong SL;Chu TC;Lan GY;Wu TH;Lin YC;Lee JS
    教師: 朱鐵吉
    Date: 2002
    Publisher: 0969-8043
    Keywords: TLD dosimeter
    PHANTOM
    TLD
    RADIOTHERAPY
    MOSFET DOSIMETERS
    PHOTON BEAMS
    QUALITY DEPENDENCE
    ELECTRON-BEAMS
    RADIATION DETECTORS
    X-RAY
    MONTE-CARLO
    MOSFET dosimeter
    diagnostic radiology
    radiation detection
    Abstract: ©2002 Elsevier - 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.
    URI: http://www.elsevier.com/
    Elsevier
    http://nthur.lib.nthu.edu.tw/handle/987654321/40312
    Appears in Collections:[生醫工程與環境科學系] 期刊論文

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