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Mohammadi, Kheirollah, Gholamhosseinian, Hamid, Baziar, Omid, Mohammadi, Aghil, Bayani Roodi, Shahram. (1397). A Validation Study on Radiation properties of a Novel LiF: Mg, Ti Known as IAP-100. , 15(2), 117-125. doi: 10.22038/ijmp.2017.24584.1248
Kheirollah Mohammadi; Hamid Gholamhosseinian; Omid Baziar; Aghil Mohammadi; Shahram Bayani Roodi. "A Validation Study on Radiation properties of a Novel LiF: Mg, Ti Known as IAP-100". , 15, 2, 1397, 117-125. doi: 10.22038/ijmp.2017.24584.1248
Mohammadi, Kheirollah, Gholamhosseinian, Hamid, Baziar, Omid, Mohammadi, Aghil, Bayani Roodi, Shahram. (1397). 'A Validation Study on Radiation properties of a Novel LiF: Mg, Ti Known as IAP-100', , 15(2), pp. 117-125. doi: 10.22038/ijmp.2017.24584.1248
Mohammadi, Kheirollah, Gholamhosseinian, Hamid, Baziar, Omid, Mohammadi, Aghil, Bayani Roodi, Shahram. A Validation Study on Radiation properties of a Novel LiF: Mg, Ti Known as IAP-100. , 1397; 15(2): 117-125. doi: 10.22038/ijmp.2017.24584.1248

A Validation Study on Radiation properties of a Novel LiF: Mg, Ti Known as IAP-100

Iranian Journal of Medical Physics
مقاله 7، دوره 15، شماره 2، تیر 2018، صفحه 117-125    اصل مقاله (489.21 K)
نوع مقاله: Original Paper
شناسه دیجیتال (DOI): 10.22038/ijmp.2017.24584.1248
نویسندگان
Kheirollah Mohammadi1؛ Hamid Gholamhosseinian2؛ Omid Baziar* 3؛ Aghil Mohammadi4؛ Shahram Bayani Roodi5
1Malekashtar University,Tehran, Iran
2Medical Physics Dept, Faculty of Medicine, Mashhad University of Medical Sciences
3Medical Physics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
4Energy Engeineering and physics faculty, Amirkabir University of Technology, Tehran, Iran
5Medical Physics Department, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
چکیده
Introduction: LiF dosimeter has the most application in medicine. This study aimed to evaluate some dosimetric properties of a novel LiF: Mg, Ti.
Materials and Methods: An ELEKTA Precise linear accelerator was used to calibrate dosimeters at 6 MV. In this survey, responses of dosimeters were evaluated up to 1000 cGy. Background effect was investigated in two different dosimeter states including irradiated and unirradiated.Thermoluminescence response dependence to dose rate was investigated, as well. Energy dependence was evaluated in diagnostic and therapeutic ranges. Furthermore, fading effect was evaluated by reading the dosimeters every 2 h up to 12 h post-irradiation.
 Results: The dosimeters had linear response up to 250 cGy. Readout values of dosimeters receiving 120 cGy at three dose rates of 21, 212, 425 cGy.min-1 were calculated equal to 125, 123, 121 cGy, respectively. The measured values of delivering 80, 120, and 150 cGy prescribed doses at 6 MV, 10 MV, and 15 MV were accurate at 6 MV and about 1.5 times higher than the prescribed doses at 10 and 15 MV. Thermoluminescence response in diagnostic energy range showed an uprising trend with increasing energy.
Conclusion: The raising thermoluminescence response with increasing energy contradicts with the findings of Nunn. Due to the reproducibility and linear response of dosimeters in an acceptable dose range, they could be used in diagnostic and therapeutic fields. Effects of absorbed doses from background in low-dose studies, mainly in diagnostic radiology range, could be evaluated in more detail in future surveys.
کلیدواژه‌ها
Radiation Dosimeters؛ Reproducibility of Results؛ Reading؛ Calibration
مراجع
References

 

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