Study of Radiation Dose and Device Quality for Diagnostic X-ray Units

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概要

• 論文の詳細を見る

• Digital kVp meter, ion chamber, and x-ray films were used to study the tube voltage, beam output, and dose distribution for 29 x-ray units. Of which 14 units are equipped with single phase power supply and 15 with inverter frequency power supply. The experimental results show that the dose is dependent on tube voltage, tube current, field size except beyond 20×20cm^2, exposure distance, and heel effect. The relationship between dose and tube voltage and exposure distance as well is non-linear, while that between dose and tube current is linear. The non-uniform and non-symmetric dose distribution depends on the heel effect of the x-ray beam. The measured voltage deviating from the default value may reach-2.4% to-9.1% depending on the power supply system used. The dose delivered from the units with inverter frequency power supply is 1.64 times higher than that with single phase power supply.

• 日本保健物理学会の論文

著者

• Weng Pao

  Nuclear Science And Technology Development Center National Tsing Hua University

• HSU Pin-Chieh

  Nuclear Science and Technology Development Center

• Chang Jung

  Radiological Technology Department Yuanpei Institute Of Science And Technology:biomedical Engineerin

• HSU Pin

  Nuclear Science and Technology Development Center, National Tsing Hua University

• CHAO Jiunn

  Nuclear Science and Technology Development Center, National Tsing Hua University

• SU Jenn

  Biomedical Engineering Department, Chung Yuan Christian University

• Su Jenn

  Biomedical Engineering Department Chung Yuan Christian University

• Hsu Pin

  Nuclear Science And Technology Development Center National Tsing Hua University

• Chao Jiunn-hsing

  Nuclear Science And Technology Development Center National Tsing Hua University

• Chao Jiunn

  Nuclear Science And Technology Development Center National Tsing Hua University

• Chang Jung-Hua

  Radiological Technology Department, Yuanpei Institute of Science and Technology:Biomedical Engineering Department, Chung Yuan Christian University

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