Department of Medical Imaging and Therapeutic Sciences, Cape Peninsula University of Technology, South Africa.
Radiography (Lond). 2021 May;27(2):255-259. doi: 10.1016/j.radi.2020.07.019. Epub 2020 Aug 15.
Intracranial aneurysm coil embolisation is a fluoroscopically guided procedure associated with high radiation dose. The increase in the number of coil embolisation procedures raises concern for the amount of radiation and the associated radiation risks to the patients. This research study was conducted to determine the average radiation dose to patients' thyroid glands and local skin during intracranial aneurysm coil embolisation and to establish preliminary local diagnostic reference levels for this procedure. In this paper, local skin dose refers to the absorbed radiation dose on the areas of the skin exposed to radiation during intracranial aneurysm coil embolisation, namely neck, face and scalp.
This study employed air-kerma area product meters to determine the local skin dose and diagnostic reference levels during intracranial aneurysm coil embolisation. In addition, thyroid radiation doses were measured using thermo-luminescent dosimeters on a phantom during simulation of embolisation procedures.
The local skin doses as determined by air-kerma area product ranged between 33 and 125 Gy.cm2. The mean thyroid dose was 9.87 mGy. The established local diagnostic reference level was 52.1 Gy cm, 17.8 min' fluoroscopy time and 503 image frames.
The average air-kerma area product values and the proposed diagnostic reference levels were lower than most published values for intracranial aneurysm coil embolisation.
The established local diagnostic reference levels are recommended for use as radiation dose optimisation tool at the research site. The findings of this study cannot be generalised or applied to other hospitals. The complexity of the embolisation procedures was not classified for this study. Further research on diagnostic reference levels for intracranial aneurysm coil embolisation, taking into account the complexity of the procedures, is recommended.
颅内动脉瘤线圈栓塞是一种在透视引导下进行的操作，与高剂量辐射有关。随着线圈栓塞术数量的增加，人们对患者接受的辐射量及其相关风险表示担忧。本研究旨在确定颅内动脉瘤线圈栓塞过程中患者甲状腺和局部皮肤的平均辐射剂量，并为该操作建立初步的局部诊断参考水平。在本文中，局部皮肤剂量是指在颅内动脉瘤线圈栓塞过程中暴露于辐射的皮肤区域（颈部、面部和头皮）所吸收的辐射剂量。
本研究使用空气比释动能面积乘积仪来确定颅内动脉瘤线圈栓塞过程中的局部皮肤剂量和诊断参考水平。此外，在模拟栓塞过程中，使用热释光剂量计在模型上测量甲状腺的辐射剂量。
空气比释动能面积乘积仪测量的局部皮肤剂量范围为 33 至 125Gy.cm2。平均甲状腺剂量为 9.87mGy。建立的局部诊断参考水平为 52.1Gy.cm、17.8 分钟透视时间和 503 帧图像。
平均空气比释动能面积乘积值和提出的诊断参考水平低于颅内动脉瘤线圈栓塞的大多数已发表值。
建议在研究地点将建立的局部诊断参考水平作为辐射剂量优化工具使用。本研究的结果不能推广或应用于其他医院。本研究未对栓塞过程的复杂性进行分类。建议进一步研究考虑到操作复杂性的颅内动脉瘤线圈栓塞的诊断参考水平。
