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KMID : 0857020050200010157
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Kosin Medical Journal
2005 Volume.20 No. 1 p.157 ~ p.163
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Evaluation of TLD Rod and Chip in each Teflon Case as in-vivo Dosimeter
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Kim Soo-Kil
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Abstract
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Purpose: To evaluate the performance of the both teflon cases for TLD rod and for TLD chip for measuring absorbed dose which may be developed as in-vivo dosimeter in nuclear medicine.
Methods: measured the depth dose in solid phantom and in anthropomorphic phantom using TLD rod in rod teflon case and TLD chip in chip teflon case. The measurement of depth dose in solid phantom and the absorbed dose in anthropomorphic phantom performed with TLD rod in rod teflon case were compared to the values obtained by with TLD chip in chip teflon case.
Results: TLD chip in chip teflon case showed more significant build-up effect near the surface caused by the more thickness of chip teflon case than rod teflon case. But the effectiveness of both teflon case in anthropomorphic phantom was similar to each other.
Conclusion: TLD rod in rod teflon case and TLD chip in chip teflon case were proven to be appropriate for in-vivo dosimetry in therapeutic environments. But The TLD rod in teflon case was shown more effectiveness near the surface.
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KEYWORD
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Evaluation, TLD, Rod, Chip, Teflon, case, Anthropomorphic phantom
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