| LIU Chang-sheng,ZHANG Duan-lian,ZHENG Xiao-hua.Radiation protection for the eyes of the children experiencing an operation of artificial cochlear implant against CT scan[J].Chinese Journal of Radiological Medicine and Protection,2006,26(6):603-605 |
| Radiation protection for the eyes of the children experiencing an operation of artificial cochlear implant against CT scan |
| Received:October 28, 2005 |
| DOI： |
| KeyWords:Cochlear implantation Electrodes Implanted Tomography |
| FundProject:湖北省教育厅科研基金资助项目(2000B03022) |
| Author Name | Affiliation | | LIU Chang-sheng | Department of Radiology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | ZHANG Duan-lian | 武汉大学医学院解剖学与组织胚胎学教研室 | | ZHENG Xiao-hua | Department of Radiology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | 李茂进 | Department of Radiology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | 魏文洲 | Department of Radiology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | 潘鄂武 | Department of Radiology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | 唐兴桥 | Department of Radiology, Renmin Hospital of Wuhan University, Wuhan 430060, China
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| Abstract:: |
| Objective To optimize the CT scanning parameters in pediatric temporal bone examination with artificial cochlear implant and reduce its radiation hazards. Methods The temporal bones of 87 patients with suspected inner ear disease which include 31 experienced artificial cochlear implant were scanned by HRCT.Regarding adult scan parameters as a criteria, properly adjusted the scanning dose and scanning angle until the quality of CT images was beyond the diagnosis demands.Finally the exposed doses, single scanning CT dose index weighted (CTDIw) and dose length product (DLP) were analysed. Results Compared with adult temporal bone scanning, the exposure value and CTDIw were reduced to 66.67%-83.33%, DLP of temporal bone scanning in pediatrics was reduced to 66.67%-83.33%,moreover, the imaging quality of tridimensional reconstruction for inner ear and implant electrode was improved. Conclusion The proper reduction of CT scan exposure on preoperative and postoperative children with cochlear implants and the proper adjustment of scan angle can significantly reduce the exposure dose to local temporal bone and effectually avoid the damage to lens of children. |
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