Department of Radiology, Toranomon Hospital, 2-2-2 Toranomon, Minato-ku, Tokyo 105-8470, Japan.
Course of Radiological Technology, Health Sciences, Graduate School of Medicine, Tohoku University, 2-1 Seiryo, Aoba-ku Sendai, Miyagi 980-8575, Japan.
J Radiol Prot. 2024 Sep 12;44(3). doi: 10.1088/1361-6498/ad76b3.
This study aimed to evaluate the radiation doses (peak skin dose (PSD) and bilateral lens dose) for each interventional neuroradiology procedure. A direct measurement system consisting of small radiophotoluminescence glass dosimeter chips and a dosimetry cap made of thin stretchable polyester was used for radiation dosimetry. The mean PSDs for each procedure were 1565 ± 590 mGy (simple technique coil embolization (STCE) cases), 1851 ± 825 mGy (balloon-assisted coil embolization (BACE) cases), 2583 ± 967 mGy (stent-assisted coil embolization (SACE) cases), 1690 ± 597 mGy (simple flow-diverter stenting (FDS) cases), and 2214 ± 726 mGy (FDS + coiling cases). The mean PSD was higher in SACE cases than in STCE, BACE, and simple FDS cases. Moreover, the PSD exceeded 2000 mGy and 3000 mGy in 46 (67.6%) and 19 (27.9%) SACE cases, respectively. The left lens doses for each procedure were 126 ± 111 mGy (STCE cases), 163 ± 152 mGy (BACE cases), 184 ± 148 mGy (SACE cases), 144 ± 60 mGy (simple FDS cases), and 242 ± 178 mGy (FDS + coiling cases). The left lens dose in SACE cases was higher than that in STCE cases and exceeded 500 mGy in 3 (4.4%) patients. In FDS + coiling cases, the mean PSD and left lens dose were 2214 ± 726 mGy and 242 ± 178 mGy, respectively. The left lens dose was higher than that in the STCE and BACE cases, with two (15.4%) patients receiving doses >500 mGy in FDS + coiling cases. The detailed data obtained in this study are expected to contribute to the promotion of radiation dose optimization.
本研究旨在评估每项介入神经放射学程序的辐射剂量（峰值皮肤剂量 (PSD) 和双侧晶状体剂量）。辐射剂量测量使用由小型放射光致发光玻璃剂量计芯片和由薄拉伸聚酯制成的剂量帽组成的直接测量系统。每个程序的平均 PSD 分别为 1565±590mGy（单纯技术线圈栓塞术 (STCE) 病例）、1851±825mGy（球囊辅助线圈栓塞术 (BACE) 病例）、2583±967mGy（支架辅助线圈栓塞术 (SACE) 病例）、1690±597mGy（单纯血流导向支架置入术 (FDS) 病例）和 2214±726mGy（FDS+线圈栓塞术病例）。SACE 病例的平均 PSD 高于 STCE、BACE 和单纯 FDS 病例。此外，46 例（67.6%）和 19 例（27.9%）SACE 病例的 PSD 分别超过 2000mGy 和 3000mGy。每个程序的左眼晶状体剂量分别为 126±111mGy（STCE 病例）、163±152mGy（BACE 病例）、184±148mGy（SACE 病例）、144±60mGy（单纯 FDS 病例）和 242±178mGy（FDS+线圈栓塞术病例）。SACE 病例的左眼晶状体剂量高于 STCE 病例，其中 3 例（4.4%）超过 500mGy。在 FDS+线圈栓塞术病例中，平均 PSD 和左眼晶状体剂量分别为 2214±726mGy 和 242±178mGy。左眼晶状体剂量高于 STCE 和 BACE 病例，FDS+线圈栓塞术病例中有 2 例（15.4%）患者的剂量>500mGy。本研究获得的详细数据有望有助于促进辐射剂量优化。
