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KMID : 0357520170400010049
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Journal of Radiological Science and Technology
2017 Volume.40 No. 1 p.49 ~ p.55
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Organ Dose Assessment of Nuclear Medicine Practitioners Using L-Block Shielding Device for Handling Diagnostic Radioisotopes
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Kang Se-Sik
Cho Yong-In
Kim Jung-Hoon
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Abstract
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In the case of nuclear medicine practitioners in medical institutions, a wide range of exposure dose to individual workers can be found, depending on the type of source, the amount of radioactivity, and the use of shielding devices in handling radioactive isotopes. In this regard, this study evaluated the organ dose on practitioners as well as the dose reduction effect of the L-block shielding device in handling the diagnostic radiation source through the simulation based on the Monte Carlo method. As a result, the distribution of organ dose was found to be higher as the position of the radiation source was closer to the handling position of a practitioner, and the effective dose distribution was different according to the ICRP tissue weight. Furthermore, the dose reduction effect according to the L-block thickness tended to decrease, which showed the exponential distribution, as the shielding thickness increased. The dose reduction effect according to each radiation source showed a low shielding effect in proportion to the emitted gamma ray energy level.
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KEYWORD
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Simulation , L-block shield , MIRD phantom , Dose assessment
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