| Zhang Kun,Shi Xiang,Xie Shuangshuang,Lin Liying,Dou Yana,Shen Wen.Feasibility of improving the quality of children's abdominal images using split-filter dual-energy CT[J].Chinese Journal of Radiological Medicine and Protection,2023,43(8):639-644 |
| Feasibility of improving the quality of children's abdominal images using split-filter dual-energy CT |
| Received:February 13, 2023 |
| DOI：10.3760/cma.j.cn112271-20230213-00034 |
| KeyWords:Dual-energy CT Child phantom Radiation dose Image quality |
| FundProject:国家自然科学基金（81901710，81873888）；天津市卫生健康科技项目青年人才项目（TJWJ2021QN011，QN20024）；天津市自然科学基金（22JCQNJC00920）；天津市医学重点学科（专科）建设项目（TJYXZDXK-041A）临床试验注册：中国临床试验注册中心，ChiCTR1800019231 |
| Author Name | Affiliation | E-mail | | Zhang Kun | Department of Radiology, Tianjin First Central Hospital, Tianjin Institute of Imaging Medicine, Tianjin 300192, China | | | Shi Xiang | Department of Radiology, Tianjin First Central Hospital, Tianjin Institute of Imaging Medicine, Tianjin 300192, China | | | Xie Shuangshuang | Department of Radiology, Tianjin First Central Hospital, Tianjin Institute of Imaging Medicine, Tianjin 300192, China | | | Lin Liying | Department of Radiology, Tianjin First Central Hospital, Tianjin Institute of Imaging Medicine, Tianjin 300192, China | | | Dou Yana | Siemens Healthineers Co., Ltd., Beijing 100096, China | | | Shen Wen | Department of Radiology, Tianjin First Central Hospital, Tianjin Institute of Imaging Medicine, Tianjin 300192, China | shen_hos@163.com |
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| Abstract:: |
| Objective To evaluate the effects of split-filter dual-energy CT (SF-DECT) in improving image quality at low doses in the process of abdominal examinations for children.Methods A preliminary study was conducted using child phantoms. Furthermore, 20 children aged 4-6 years were recruited prospectively for clinical validation from June 2020 to December 2020. Conventional single-energy CT (SECT) and SF-DECT were employed to scan the abdominal areas of the phantoms and children. Then, the CT values, image noise, contrast to noise ratios (CNRs), and image subjective scores of SF-DECT and SECT were compared under various doses (1, 2, 3, and 4 mGy).Results For the phantoms under doses of 3 and 4 mGy, SF-DECT decreased the image noise by 18.9% and 23.6%, respectively, and increased the liver and kidney CNRs (CNRliv and CNRkid) by 12.8% and 31.9% at most, respectively, compared to SECT (Z=3.00, 5.17, P < 0.001). For children, SF-DECT decreased image noise (Z=4.64, P < 0.001) and increased CNRliv and CNRkid (Z=3.78, 3.39, P < 0.001). For both the phantoms and the children, the subjective scores of images scanned using the SF-DECT were higher than those scanned using the SECT (Z=1.96-3.80, P < 0.05).Conclusions Compared with SECT, SF-DECT can improve the quality of children's abdominal images. This technique has a certain prospect of optimizing abdominal CT for children. However, it is necessary to conduct in-depth clinical research to verify the result. |
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