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| Monitoring and Analysis PET/CT Workplace Radioactivity Level in Shanghai |
| WANG Bin, GAO Lin-feng, QIAN Ai-jun, YAO Jie, SHEN Jin-fu, JI Gui-yi |
| Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336 China |
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Abstract Objective To understand the PET/CT basic information in Shanghai, through monitoring radioactivity level of PET/CT workplace, to get the radiological protection information about PET/CT place. Methods Through the γ radiation air absorbed dose rate and the β surface contamination to investigate PET/CT medical institutions in Shanghai. Results By the end of 2011, there were 13 sets of PET/CT. Detecting show that γ radiation air absorbed dose rate is at relatively higher level in waiting room and the injection rooms, the date of waiting room door was up to 19 552 nSv/h, the maximum value of injection room desk surface was 6 136 nSv/h, the middle of injection room was up to 5 408 nSv/h. Any date was certain the limits of national standard of β surface contamination, the middle of in the injection room. It is still higher on the window and wastes barrel. Conclusion The radiation protection of PET/CT workplace is proper, surface contamination levels can be contralled within in the standard limits, but there are a blank of limits about nuclear medicine place of γ radiation absorbed dose rate air in the national standard, and external exposure protection is still the key of radiation protection.
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Received: 09 February 2012
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