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KMID : 1151820120060060499
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Journal of the Korean Society of Radiology
2012 Volume.6 No. 6 p.499 ~ p.505
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Relative ratio about dose value of thermoluminescence and optical stimulated luminescence dosimeter according to exposed condition in diagnostic radiation
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Kang Young-Han
Kwon Soon-Mu
Kim Boo-Soon
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Abstract
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The purpose of this study was to find out the difference of radiation dose value through energy, exposure number, fluoroscopy time, the number of days of exposed scatter X-ray when TLD and OSLD is used in diagnostic radiology. The difference of value were measured by relative ratio and interval. Energy makes high relative ratio of TLD(1.81±0.41) than OSLD(1.40±0.26), exposure number makes high of OSLD(1.40±0.26) than TLD(2.10±0.10). There are no significant differences between relative ratio of TLD and OSLD in fluoroscopy time and the number of days of exposed scatter X-ray. But interval of relative ratio in the number of days of exposed scatter X-ray was narrowed in less 0.2. That means, the measurement of scatter X-ray could more confident in TLD and OSLD than the measurement of direct ray. In conclusion, we have to recognize the relative ratio of TLD and OSLD could be vary depending on exposed condition of radiation. And in some cases, double test of TLD and OSLD get more creditable results of dose value.
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KEYWORD
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Thermoluminescence dosimeter, Optically stimulated luminescence dosimeter, Scatter X-ray, Relative ratio
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