| 摘要: |
| 目的 分析恶性肿瘤患者PET-CT检查对环境及相关工作人员的辐射剂量。方法 选取2019年1月至2020年8月在海军军医大学（第二军医大学）第一附属医院虹口院区行PET-CT检查的恶性肿瘤患者62例，检测行PET-CT检查时受检者周围、相关工作人员及工作场所的辐射剂量，包括受检者体表垂直距离1、2、3 m处的当量剂量率，候诊室、PET-CT机房、医师办公室、注射室各监测点的当量剂量率，以及相关工作人员的年有效剂量。结果 与受检者距离1、2、3 m处的当量剂量率分别为（4.40±0.64）、（1.82±0.61）、（0.87±0.35）μSv/h，与受检者距离1 m处的当量剂量率高于2 m和3 m处（P均<0.01）；候诊室防护门外表面及注射室通风柜手洞位置、注射台手洞位置、注射台工作人员身位的当量剂量率高于其他监测点，如防护墙外表面、注射室防护门外表面等（P均<0.05）；操作技师的辐射年有效剂量为0.82 mSv，高于其他相关工作人员，如候诊人员、辅助操作人员等。结论 与PET-CT受检者距离1 m处的当量剂量率高于更远距离，候诊室防护门外表面及注射室通风柜手洞位置、注射台手洞位置、注射台工作人员身位的当量剂量率高于其他工作场所。 |
| 关键词: 正电子发射断层显像计算机体层摄影术 恶性肿瘤 辐射剂量 环境 工作人员 |
| DOI：10.16781/j.CN31-2187/R.20210715 |
| 投稿时间：2021-07-22修订日期：2021-12-17 |
| 基金项目: |
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| Radiation doses to surroundings and medical staffs during PET-CT examination of malignant tumor patients |
| LI Ying-kun1,HOU Zheng-song2* |
(1. Department of Prevention and Health Care, Hongkou Branch of The First Affiliated Hospital of Naval Medical University(Second Military Medical University), Shanghai 200081, China;
2. Department of Medical Engineering, The First Affiliated Hospital of Naval Medical University(Second Military Medical University), Shanghai 200433, China
*Corresponding author) |
| Abstract: |
| Objective To analyze the radiation doses to surroundings and medical staffs during positron emission tomography-computed tomography (PET-CT) examination of malignant tumor patients. Methods Sixty-two patients with malignant tumors who underwent PET-CT examination in Hongkou Branch of The First Affiliated Hospital of Naval Medical University (Second Military Medical University) from Jan. 2019 to Aug. 2020 were enrolled. The radiation doses to the surroundings of patients, medical staffs and the workplaces were detected, including the equivalent dose rates at 1, 2 and 3 m away from the subjects and each monitoring point in the waiting room, PET-CT room, doctor's office and injection room, and the annual effective doses of medical staffs. Results The equivalent dose rates at 1, 2 and 3 m away from the subjects were (4.40±0.64), (1.82±0.61) and (0.87±0.35) μSv/h, respectively, and the equivalent dose rate at 1 m away from the subject was higher than that at 2 and 3 m (both P<0.01). The equivalent dose rates at outer surface of protective door of waiting room, fume hood hand hole of injection room, hand hole of injection table, and positions of injection table staff were higher than those at other monitoring sites, such as outer surface of the protective wall and surface outside the protective door of the injection room (all P<0.05). The annual effective radiation dose of operation technicians was 0.82 mSv, which was higher than that of other involved staffs, such as waiting personnels and auxiliary operators. Conclusion The equivalent dose rate at 1 m away from PET-CT subjects is higher than that at a longer distance. The equivalent dose rates at outer surface of protective door of waiting room and fume hood hand hole, hand hole of injection table, and positions of injection table staff of injection room are higher than those of other workplaces. |
| Key words: positron emission tomography-computed tomography malignant tumor radiation dose environment staff |
