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| A perliminary study on the radiation dose levels due to MDCT examination in Guangdong Province |
| TAN Zhan, ZOU Jianming, HUANG Weixu, LONG Xuan, MA Rui |
| Guangdong Province Hospital for Occupational Disease Prevention Treatment, Guangzhou 510300 China |
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Abstract Objective To know the radiation dose levels subjects caused by MDCT examination in Guangdong Province.Methods A stratified random sampling method was used to investigate the medical exposure dose level by selected 24 MDCT machines in Guangdong Province.Results The adult's means weighted CT dose indices of head, chest, abdomen, spine, limbs and coronary head, chest, abdomen, spine, limbs and coronary were 44.5 mGy, 15.4 mGy, 20.0 mGy, 23.4 mGy, 16.9 mGy and 38.2 mGy,respectively, while the mean values for the corresponding dose length product were 776 mGy·cm, 482 mGy·cm, 693 mGy·cm, 691 mGy·cm, 539 mGy·cm, 1056 mGy·cm, respectively. The children's means weighted CT dose index for head, chest and abdomen were 20.9 mGy, 9.6 mGy and 15.1 mGy, respectively, while the mean values for the corresponding dose length product was 257 mGy·cm, 167 mGy·cm and 472 mGy·cm, respectively.Conclusion The survey data can promote the dose control of the subjects, so as to better promote the optimization of radiation protection.
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Received: 25 March 2018
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