Feasibility study of using PIN semiconductors for diagnostic X-ray radiation dosimetry

Authors

10.22052/4.4.15

Abstract

Knowing patient exact dose during radiological activities is considered as one of the main principles to decrease radiation-induced dangers which are not really necessary and affect a great deal of people. In this respect, in recent years many extensive studies have been done on types of photodiodes and production of X-ray detectors using semiconductor elements. Since these elements are not very expensive and are too small in size and we can gain information of received dose immediately and without wasting time, they are mostly used. We aim to design a dosimeter using semiconductor elements for X-ray diagnostic radiation dosimetry. We used a typical silicon diode. Also, a stable circuit was applied to detect diagnostic X-ray radiations. To determine logical correlation between the electronic behavior of PIN sensor and specific parameters of X-ray (KV, mA.S), the designed circuit and calibrated ionization dosimeter were simultaneously irradiated by the diagnostic X-ray radiation with different energies and intensities. Finally, signal behavior was converted to digital amounts by the designed circuit. The amounts were then compared with received dose as recorded by ionization dosimetry. Results of the designed dosimetry behavior and ionization dosimetry simultaneously showed that the designed dosimetry responses are rather linear in different radiations whereas responses of the dosimetry under study is linear in low voltages while in high voltages no specific linear relation was found. It seems that used photodiode due to its availability, and low cost can be used as a dosimeter to measure diagnostic x-ray radiations in low energies.

Keywords

References

[1] S. Abbaszadeh. Indirect conversion amorphousselenium photodetectors for medical imaging applications. University of Waterloo, (2014). [2] L. Andereani, M. Bontempi, P.L. Rpssi, L.P. Rignanese, M. Zuffa, G. Baldazzi. Comparison between a silicon PIN diode and a CsI (Tl) coupled to a silicon PIN diode for dosimetric purpose in radiology. Nuclear Instruments and Methods in Physics Research, Section A. Accelerators, Spectrometers, Detectors and Associated Equipment. 762, (2014), 11-15. [3] T. Aoyama, S. Koyama, C. Kawaura. An in-phantom dosimetry system using pin silicon photodiode radiation sensors for measuring organ doses in x-ray CT and other diagnostic radiology. Med Phys. 29(7), (2002), 1504-10. [4] E. Batista, H.J. Khoury, F.A. Melo, V. Barros. The performance of commercial photodiodes for dosimetry in mammography. Radiat Prot Dosimetry. 115(1-4), (2000), 391-3. [5] A. Bayrak, E. Barlas, E. Emirhan, C. Kutlu, C.S. Ozben. A complete low cost radon detection system. Applied Radiation and Isotopes. 78, (2013), 1-9. [6] CC. Bueno, JA. Goncalves, RR. Magalhaes, MD. Santos. Response of PIN diodes as room temperature photon detectors. Appl Radiat Isot. 61, (2004), 1343-7. [7] R. Kumar, S.D. Sharma, A. Philomina, A. Topkar. Dosimetric Characteristics of a PIN Diode for Radiotherapy Application. Technol Cancer Res Treat. 13(4), ( 2013), 361-7. [8] C.A. Mills, Y. F. Chan, A. Intaniwet, M. Shkunov, A. Nisbet, J.L. Keddie, P.J. Sellin. Direct detection of 6 MV x-rays from a medical linear accelerator using a semiconducting polymer diode. Phys Med Biol. 58(13), (2013), 4471-82. [9] A.B. Rosenfeld. Electronic dosimetry in radiation therapy. Radiation measurements. 41(1), (2006), S134-S153. [10] A.B. Rosenfeld, D. Cutajar, M.L.F. Lerch, G. Takacs, I.M. Cornelius, M. Yudelev, M. Zaider. Miniature semiconductor detectors for in vivo dosimetry. Radiation protection dosimetry. 120(1-4), (2006), 48-55. [11] R.A. Terini, M.A. Pereira, R. Kunzel, P.R. Costa, S.B. Herdade. Comprehensive analysis of the spectrometric determination of voltage applied to X-ray tubes in the radiography and mammography energy ranges using a silicon PIN photodiode. Br J Radiol. 77(917), (2004), 395-404. [12] C. Romei, A.D. Fulvio, C.A. Antonio, R. Ciolini, F. Errico. Characterization of a low-cost PIN photodiode for dosimetry in diagnostic radiology. Physica Medica. 31(1), (2015), 112-116.
Journal of Radiation Safety and Measurement
Volume 5, Issue 4 - Serial Number 16
December 2016
Pages 15-20

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