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KMID : 0357520070300030245
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Journal of Radiological Science and Technology
2007 Volume.30 No. 3 p.245 ~ p.250
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Measurement of Apron Shielding Rate for X-ray and Gamma-ray
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Park Myeong-Hwan
Kwon Deok-Moon
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Abstract
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This research measured the shielding rates of apron 0.25 and 0.5 mmPb for X-ray energy in diagnosis radiation system and gamma-ray energy of -MDP and -FDG. X-ray energies were measured on effective energy of when additional filtering plate of 0, 2 mmAl is used within the range of tube voltage , and at this time, apron 0.5 mmPb has shown about 5.5% of increase in its shielding rate over 0.25 mmPb at the highest quality. Besides, the aprons of the two types have shown high shielding rate of over 90% for direct X-ray and spatial dose rate. And, in case 0.25 and 0.5 mmPb aprons were used at 140keV of -MDP, the shielding effects were between 30 and 53%, and at high energy of 511 keV, -FDG, the shielding effects of apron, , were very small.
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KEYWORD
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Apron, Shielding rate, Effective energy, Spatial dose rate
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