Kawasaki Toshio, Sakakubo Masami, Ito Kanako, Kitagawa Ai
Department of Radiological Technology, Kanagawa Children's Medical Centre, Mutsukawa 2-138-4, Minami-ku, Yokohama, Japan.
Radiat Prot Dosimetry. 2019 Dec 23;185(2):215-221. doi: 10.1093/rpd/ncy298.
The present study evaluated the organ doses, effective doses and conversion factors from the dose-area product to effective dose in pediatric diagnostic cardiac catheterization performed by in-phantom dosimetry and Monte Carlo simulation. The organ and effective doses in 5-y-olds during diagnostic cardiac catheterizations were evaluated using radiophotoluminescence glass dosemeters implanted into a pediatric anthropomorphic phantom and PCXMC software. The mean effective dose was 3.8 mSv (range: 1.8-7.5 mSv). The conversion factors from the dose-area product to effective dose were 0.9 and 1.6 mSv (Gy cm2)-1 for posteroanterior and lateral fluoroscopy, respectively, and 0.9 and 1.5 mSv (Gy cm2)-1 for posteroanterior and lateral cineangiography, respectively. Effective doses evaluated using the pediatric dosimetry system agreed with those obtained using PCXMC software within 12%. The dose data and conversion factors evaluated may guide the estimation of exposure doses in children undergoing diagnostic cardiac catheterization.
本研究通过体模内剂量测定法和蒙特卡罗模拟，评估了儿科诊断性心导管插入术中的器官剂量、有效剂量以及从剂量面积乘积到有效剂量的转换系数。使用植入儿科人体模型的放射性光致发光玻璃剂量计和PCXMC软件，评估了5岁儿童在诊断性心导管插入术期间的器官剂量和有效剂量。平均有效剂量为3.8 mSv（范围：1.8 - 7.5 mSv）。后前位和侧位透视时，从剂量面积乘积到有效剂量的转换系数分别为0.9和1.6 mSv(Gy cm²)⁻¹，后前位和侧位血管造影时，转换系数分别为0.9和1.5 mSv(Gy cm²)⁻¹。使用儿科剂量测定系统评估的有效剂量与使用PCXMC软件获得的有效剂量在12%的范围内相符。评估得到的剂量数据和转换系数可为接受诊断性心导管插入术的儿童的暴露剂量估算提供指导。
