Electroradiology Department, Faculty of Health Sciences, Institute of Physiotherapy, Jagiellonian University, Collegium Medicum, Michalowskiego 12, 31-126, Kraków, Poland.
Nuclear Medicine Department, John Paul II Hospital, Prądnicka 80, Kraków, Poland.
Radiat Environ Biophys. 2021 May;60(2):389-394. doi: 10.1007/s00411-021-00905-x. Epub 2021 Mar 22.
This paper presents results of measurements of Tc activity concentration in air and nuclear medical personnel blood during ventilation-perfusion SPECT lung scans. Tc activity measurements were conducted at the Nuclear Medicine Department, John Paul II Hospital, Krakow. Technicians and nurses who perform examinations were equipped with personal aspirators enabling air sampling to determine the radiation exposure at their workplaces. Measurements allowed to evaluate the concentration of Tc in 14 air samples and it ranged from 7800 ± 600 to 10,000 ± 1000 Bq m for air samples collected by technicians and from 390 ± 30 to 600 ± 40 Bq m for air samples collected by nurses. In addition Tc concentrations in blood of medical personnel were determined in 24 samples. For technicians the maximum Tc blood concentration levels reached 920 ± 70 Bq L and 1300 ± 100 Bq L. In the case of nurses, the maximum estimated activity concentrations were about ten times lower, namely 71 ± 7 Bq L and 39 ± 3 Bq L. Although the intakes appear to be relatively high, the resulting annual effective doses are about 34 µSv for technicians and only 2 µSv for nurses.
本文介绍了在通气灌注 SPECT 肺扫描期间测量空气中 Tc 活度浓度和核医学工作人员血液中 Tc 活度浓度的结果。Tc 活度测量在克拉科夫约翰·保罗二世医院核医学科进行。进行检查的技术人员和护士配备了个人吸气器，能够进行空气采样以确定其工作场所的辐射暴露情况。测量结果评估了 14 个空气样本中的 Tc 浓度，技术人员采集的空气样本中 Tc 的浓度范围为 7800 ± 600 至 10,000 ± 1,000 Bq/m，护士采集的空气样本中 Tc 的浓度范围为 390 ± 30 至 600 ± 40 Bq/m。此外，还在 24 个医疗人员的血液样本中测定了 Tc 浓度。对于技术人员，最大 Tc 血液浓度水平达到 920 ± 70 Bq/L 和 1300 ± 100 Bq/L。对于护士，最大估计活度浓度约低十倍，分别为 71 ± 7 Bq/L 和 39 ± 3 Bq/L。尽管摄入量似乎相对较高，但由此产生的年有效剂量对于技术人员约为 34 µSv，对于护士仅为 2 µSv。
