Božović Predrag, Ciraj-Bjelac Olivera, Petrović Jelena Stanković
School of Electrical Engineering, Department of Microelectronics and Technical Physics, University of Belgrade, Belgrade, Serbia.
Vinca Institute of Nuclear Sciences, Department of Radiation and Environmental Protection, University of Belgrade, Belgrade, Serbia.
Radiat Prot Dosimetry. 2019 Dec 23;185(2):135-142. doi: 10.1093/rpd/ncy283.
Medical personnel performing interventional procedures in cardiology and radiology is considered to be a professional group exposed to high doses of ionizing radiation. Reduction of the eye lens dose limit made its assessment in the interventional procedures one of the most challenging topics. The objective of this work is to assess eye lens doses based on the whole-body doses using methods of computational dosimetry. Assessment included different C-arm orientations (PA, LAO and RAO), tube voltages (80 -110 kV) and efficiency of different combinations of protective equipment used in interventional procedures. Center position at the height of the thyroid gives best estimate of eye lens dose, with spreads of 11% (13%), 13% (17%) and 14% (13%) for the left (right) eye lens. The conversion factors of 1.03 (0.83), 1.28 (1.06) and 1.36 (1.06) to convert whole body to eye lens dose were derived for positions of first operator, nurse and radiographer, respectively. The eye lens dose reduction factors for different combinations of applied protective equipment are 178, 5 and 6, respectively.
从事心脏病学和放射学介入程序的医务人员被认为是一个暴露于高剂量电离辐射的专业群体。降低眼晶状体剂量限值使得在介入程序中对其进行评估成为最具挑战性的课题之一。这项工作的目的是使用计算剂量学方法根据全身剂量评估眼晶状体剂量。评估包括不同的C形臂取向（前后位、左前斜位和右前斜位）、管电压（80 - 110千伏）以及介入程序中使用的不同防护设备组合的效率。甲状腺高度处的中心位置能最好地估计眼晶状体剂量，左眼晶状体（右眼晶状体）的误差范围分别为11%（13%）、13%（17%）和14%（13%）。分别得出了将全身剂量转换为眼晶状体剂量的转换系数，首位操作人员、护士和放射技师的转换系数分别为1.03（0.83）、1.28（1.06）和1.36（1.06）。不同应用防护设备组合的眼晶状体剂量降低系数分别为178、5和6。
