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| Monitoring and Evaluation of Environmental Radiation in a PET-CT Center in Nantong a Hospital |
| YAO Ying |
| Nantong Municipal Environmental Monitoring Center, Radiation Section, Nantong 226001 China |
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Abstract Objective To monitor the radioactivity level of PET-CT workplace, analyze the of Radiation Workers' Personal Dose Monitoring data and evaluate the PET-CT radiation protection.Methods By on-site monitoring of the X-γ radiation air absorbed dose rate and the β surface contamination, the six years of different types of workers' peronal capita effective dose was analyzed.Results The X-γ radiation air absorbed dose rate a maximum of 40 000 ngy/h and the level of β surface contamination results are 0.02~6.9 Bq/cm2. Monitoring results can satisfy the requirements of relevant standards, the annual effective dose per person in the sub-load type and injection type is above 1mSv, which is slightly higher than other types of workers.Conclusion The PET-CT center radiological protection basically meet the requirements and need to take further measures to reduce exposure risk.
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Received: 11 October 2016
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