| 王英,叶国伟,陈聪,徐梦溪,吴金英,章伟敏,王鑫宏.2019—2020年某院眼科住院患者X射线检查模式的变化及其对辐射剂量水平的影响[J].中华放射医学与防护杂志,2022,42(6):470-474 |
| 2019—2020年某院眼科住院患者X射线检查模式的变化及其对辐射剂量水平的影响 |
| Changes of X-ray examination mode for ophthalmic inpatients and impact on radiation dose level from 2019 to 2020 |
| 投稿时间：2022-03-05 |
| DOI：10.3760/cma.j.cn112271-20220305-00086 |
| 中文关键词: 辐射剂量 计算机体层成像 胸部X射线检查 |
| 英文关键词:Radiation dose Computed tomography Chest X-ray examination |
| 基金项目:浙江省医药卫生科技计划(2021PY008) |
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| 中文摘要: |
| 目的 通过分析比较眼科病房住院患者X射线检查部位及辐射剂量构成，探讨近年X射线检查模式的变化与推行的技术优化对患者辐射剂量水平的影响。方法 采用简单随机抽样法回顾性调取浙江大学医学院附属第二医院2019年7月1日至2019年11月31日及2020年7月1日至2020年11月31日眼科病房住院患者的影像学资料，共516例，根据检查时间选取2019年258例、2020年258例。依据前期研究成果并结合低剂量CT筛查的相关文献，项目组在2020年对CT扫描参数与流程进行了一系列优化，统计优化前后单次检查剂量，统计两年数字X射线摄影(Digital Radiography，DR)和CT检查的人次、人均检查次数、CT与DR的构成比、人均X射线受检剂量。结果 2020年眼科住院患者胸部CT、眼眶CT的平均有效剂量分别为2.587±1.586 mSv和0.877±0.733 mSv，明显低于2019年(F=0.52、0.72，P＜0.05)，分别降低34.82%、37.13%；胸部DR与头颅CT的平均有效剂量2020年与2019年比较差异无统计学意义(F=6.01、1.81，P＞0.05)；人均X射线检查频率增加0.15次，人均X射线有效剂量增加1.44倍(1.589 mSv)；2019年X射线检查以胸部DR为主，占全部检查的68.79%，2020年以胸部CT为主，占全部检查的71.05%；2020年胸部CT构成比较2019年增加63.17%，胸部DR、眼眶CT、头颅CT的构成比分别较少53.88%、5.79%、2.89%。结论 经过剂量优化，2020年眼科住院患者CT单次检查剂量较2019年有所降低。胸部CT检查频率明显增加，并代替胸部DR成为其主要的X射线检查手段，使眼科住院患者X射线有效剂量明显增加。 |
| 英文摘要: |
| Objective To analyze and compare the X-ray procedures and radiation dose composition of ophthalmic inpatients, and to explore the changes of the X-ray examination mode in recent years and the effect of optimization in imaging technology on the radiation dose level of the patients.Methods The simple random sampling method was used to retrospectively select the imaging data of the ophthalmic inpatients in the Second Affiliated Hospital of Zhejiang University School of Medicine from July 1st to November 31st in 2019 and from July 1st to November 31st in 2020. A total of 516 cases were selected according to the imaging time, including 258 cases in 2019 and 258 cases in 2020. Based on our previous research and the related documents of low-dose CT screening, a series of optimizations on CT scanning parameters and process were carried out in 2020, including the frequency of DR and CT scanning, the number of examinations per capita, the composition ratio of CT and DR, and X-ray dose per capita.Results In 2020, the average effective doses of chest CT and orbital CT for ophthalmic inpatients were (2.587±1.586) mSv and (0.877±0.733) mSv, significantly lower than those in 2019 (F=0.52, 0.72, P < 0.05), and decreased by 34.82% and 37.13%, respectively. There was no significant difference in the average effective dose of chest DR and head CT between 2020 and 2019 (F=6.01, 1.81, P>0.05). The number of X-ray examination per capita increased by 0.15 times, and the effective dose increased by 1.44 times (1.589 mSv). Chest DR was the main type of X-ray examination, accounting for 68.79% of all examinations in 2019, while chest CT was the main type, accounting for 71.05% in 2020. The composition of chest CT in 2020 increased by 63.17% compared with 2019, and the compositions of chest DR, orbital CT and cranial CT were decreased by 53.88%, 5.79% and 2.89%, respectively.Conclusions With dose optimization measures, the single CT dose of ophthalmic inpatients in 2020 was lower than that in 2019. Chest CT increased significantly in frequency, and became main X-ray examination instead of chest DR which made the effective dose of ophthalmic inpatients increasing significantly. |
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