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Study on the characteristics of X-ray spectra in imaging diagnosis using Monte Carlo simulations

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Abstract

X-rays are widely used in diagnostic imaging such as radiography and computed tomography. An understanding of the X-ray spectrum is essential for estimating the dose absorbed by the patient and for improving image quality. In this research, X-ray emission spectra were investigated by using two different approaches: a Monte Carlo method using the MCNP5 code and a semi-empirical calculation with SpekCalc software. The results were compared with each other to validate the Monte Carlo simulation of the X-ray spectra, so that the simulation model can be applied to estimating the dose rate distribution in X-ray imaging. The obtained results show good agreement between the two approaches, but some divergence is still observed in the characteristic X-ray peaks. In addition, the influence of X-ray tube parameters such as the peak voltage, filter, anode angle and target material on of the beam quality was investigated.

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Authors and Affiliations

  1. Faculty of Physics and Engineering Physics, VNU-HCM - University of Science, Ho Chi Minh City, 700000, Vietnam

    Khanh Ai Tran, Loan Thi Hong Truong & Nhon Van Mai

  2. Institute of Physics, University of Freiburg, Freiburg im Breisgau, 79085, Federal Republic of Germany

    Phuong Nguyen Dang

  3. Ho Chi Minh City University of Pedagogical, Ho Chi Minh City, 700000, Vietnam

    Dung Thi Thuy Vo

Authors
  1. Khanh Ai Tran
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  2. Loan Thi Hong Truong
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  3. Nhon Van Mai
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  4. Phuong Nguyen Dang
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  5. Dung Thi Thuy Vo
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Correspondence to Khanh Ai Tran.

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Tran, K.A., Truong, L.T.H., Mai, N.V. et al. Study on the characteristics of X-ray spectra in imaging diagnosis using Monte Carlo simulations. Journal of the Korean Physical Society 69, 1168–1174 (2016). https://doi.org/10.3938/jkps.69.1168

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  • DOI: https://doi.org/10.3938/jkps.69.1168

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