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| Measurement and comparison of intraocular lens dose in five cranial CT scanning methods |
| YANG Hongyun1,2,3, LI Hailiang2, YANG Shuhui2, ZHANG Lin2, MIN Nan2, ZHU Jianguo2 |
1. School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250200 China;
2. Institute of Radiation Medicine, Shandong Academy of Medical Sciences;
3. Xintai Affiliated Hospital of Taishan Medical University(Xintai People's Hospital) |
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Abstract Objective Measure and compare the dose of ocular lens in five cranial CT scanning methods by using simulation human body model and thermoluminescence dosimeter (TLD).Methods The TLD was placed in the reserved hole of the eye lens of the head model.Five cranial CT scanning methods were performed on 8 CT. At the end of each scan, take down the TLD was taken down,andrecord the numbered for later measurement.Results The eye lens radiation dose measured of anthropomorphic phantom by TLD under the condition of head CT scanning respectively was that (17.78±10.03)mGy under the brainhead CT scanning,(17.45±7.92)mGy under the Orbital cavity CT scanning,(14.65±3.80)mGy under the nasal bone CT scanning,(9.93±6.25)mGy under the Sinuses CT scanning,(7.94±5.18)mGy under the temporal bone CT scanning.Conclusion The overall level of the exposure dose to the intraocular lens during the CT scan of the skull was(13.55±7.89)mGy. The dose of ocular lens shows significant difference in different CT and craniocerebral scanning methods.
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Received: 10 January 2019
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