McNeil Sarah M, Lai Priscilla, Connolly Bairbre L, Gordon Christopher L
Department of Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario, Canada.
Radiat Prot Dosimetry. 2013 Dec;157(3):363-74. doi: 10.1093/rpd/nct161. Epub 2013 Jul 9.
Modern-day interventional radiology (IR) procedures impart a wide range of occupational radiation doses to team members. Unlike thermoluminescent badges, digital dosemeters provide real-time dose readings, making them ideal for identifying different components during IR procedures, which influence staff radiation safety. This study focused solely on paediatric IR (PIR) cases. Digital dosemeters measured the impact of imaging modality, shielding, patient and operator specific factors, on the radiation dose received during various simulated and real live PIR procedures. They recorded potential dose reductions of 10- to 100-fold to each staff member with appropriate use of shielding, choice of imaging method, staff position in the room and complex interplay of other factors. The digital dosemeters were well tolerated by staff. Results highlight some unique radiation safety challenges in PIR that arise from dose increases with magnification use and close proximity of staff to the X-ray beam.
现代介入放射学(IR)程序会给团队成员带来广泛的职业辐射剂量。与热释光徽章不同,数字剂量计可提供实时剂量读数,使其成为识别IR程序中影响工作人员辐射安全的不同组成部分的理想工具。本研究仅聚焦于儿科介入放射学(PIR)病例。数字剂量计测量了成像方式、屏蔽、患者和操作员特定因素对各种模拟和实际PIR程序中所接受辐射剂量的影响。通过适当使用屏蔽、选择成像方法、工作人员在房间中的位置以及其他因素的复杂相互作用,他们记录到每个工作人员的潜在剂量降低了10到100倍。工作人员对数字剂量计的耐受性良好。结果突出了PIR中一些独特的辐射安全挑战,这些挑战源于使用放大功能时剂量增加以及工作人员与X射线束的近距离接触。