IVR-CT设备TACE治疗患者辐射剂量评价方法的研究

刘汪洋; 孙存杰; 赵红兰; 汪秀玲

doi:10.15953/j.1004-4140.2019.28.06.02

IVR-CT设备TACE治疗患者辐射剂量评价方法的研究

1. 徐州医科大学医学影像学院, 江苏徐州 221000;
2. 徐州医科大学附属医院影像科, 江苏徐州 221000

基金项目:

国家自然科学基金（81901798）。

详细信息

作者简介:
刘汪洋(1988-),男,徐州医科大学讲师,主要从事医学影像技术、放射防护相关教学及研究,Tel:0516-83262244,E-mail:z258921492@163.com;汪秀玲^*(1963-),女,主任医师,副教授,硕士研究生指导教师,徐州医科大学影像诊断学教研室主任,附属医院影像科副主任,主要从事影像诊断的临床教学与科研,Tel:0516-85806539,E-mail:xuzhouwangxl@hotmail.com。

中图分类号: R812
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出版历程
- 收稿日期: 2019-09-15
- 网络出版日期: 2021-11-07
- 发布日期: 2019-12-24

Study on Evaluation Method of Radiation Dose of Patients in TACE of IVR-CT

1. School of Medical Imaging, Xuzhou Medical University, Xuzhou 221000, China;
2. Department of Medical Imaging, Xuzhou Medical University Hospital, Xuzhou 221000, China

摘要

摘要: 目的：通过测量肝动脉化疗栓塞术（TACE）治疗中患者入射体表剂量（ESD），对比设备剂量指示值（dose index，DI），建立两者之间的换算公式。方法：在接受肝癌TACE治疗的50名患者（男37、女13；年龄70.3岁±6.8岁）体表放置荧光玻璃剂量计，测量治疗中患者ESD。测定部位3处，分别为病灶背侧体表、CT及锥形束CT（CBCT）扫描野内。分别测量治疗过程中总ESD、1次CT扫描及1次锥形束CT扫描的ESD。治疗使用的IVR-CT设备为AXIOM Artis dTA/i-CT（Siemens）。探讨体表剂量与设备剂量指示值的关系。结果：ESD与设备DI之间的换算公式为ESD（mGy）=[（0.697×CTDI+7.175）×CT扫描次数]+[0.384×CBCTDI-5.472]+[0.567×透视DI-9.248]。结论：设备DI与实际测量的ESD有良好的直线相关性，使用换算公式可以得出治疗过程中患者ESD。
- IVR-CT /
- 辐射剂量 /
- 肝动脉化疗栓塞术 /
- 肝癌
Abstract: Objective: To establish the conversion formula between the Entrance Surface Dose (ESD) of the patient in the TACE treatment and the Dose Index (DI) from equipment. Methods: ESDs were measured from 50 patients who received TACE (37 Males, 13 Females; (70.3±6.8) years old) by placing fluorescent glass dosimeters on the skin surface. ESDs were measured in three locations, including the dorsal surface of the lesion, the scan field of CT and cone beam CT (CBCT). The total ESD, ESD in each CT scan and CBCT scan were measured, respectively. AXIOM Artis dTA/i-CT (Siemens) was used as the equipment of IVR-CT. The relationship between perspective DI and perspective ESD were explored. Results: The conversion formula between ESD and DI is established as: ESD=[(0.697×CTDI+7.175)×number of CT scans]+[0.384×CBCT DI-5.472]+[0.567×perspective DI -9.248]. Conclusions: DI and ESD have a good linear correlation. We can use the conversion to formulate ESD in this study.
- IVR-CT /
- radiation dose /
- transcatheter arterial chemo-embolization /
- liver cancer