[1]常继辉,李凯,张云,等.医疗植入物在磁共振成像中的升温效应研究[J].中国医学物理学杂志,2023,40(10):1228-1232.[doi:DOI:10.3969/j.issn.1005-202X.2023.10.006]
 CHANG Jihui,LI Kai,ZHANG Yun,et al.Heating effect of medical implant in magnetic resonance imaging[J].Chinese Journal of Medical Physics,2023,40(10):1228-1232.[doi:DOI:10.3969/j.issn.1005-202X.2023.10.006]
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医疗植入物在磁共振成像中的升温效应研究()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
40卷
期数:
2023年第10期
页码:
1228-1232
栏目:
医学影像物理
出版日期:
2023-10-27

文章信息/Info

Title:
Heating effect of medical implant in magnetic resonance imaging
文章编号:
1005-202X(2023)10-1228-05
作者:
常继辉1李凯1张云1郭德洪1唐冬梅1代宁1张双12
1.中江县人民医院骨科, 四川 德阳 618000; 2.内江师范学院智慧医疗工程应用实验室, 四川 内江 641100
Author(s):
CHANG Jihui1 LI Kai1 ZHANG Yun1 GUO Dehong1 TANG Dongmei1 DAI Ning1 ZHANG Shuang1 2
1. Department of Orthopaedics, the Peoples Hospital of Zhongjiang, Deyang 618000, China 2. Smart Medical Engineering Applications Laboratory, Neijiang Normal University, Neijiang 641100, China
关键词:
金属医疗植入物磁共振成像升温效应吸收比数字人
Keywords:
Keywords: metal medical implant magnetic resonance imaging heating effect specific absorption ratio digital human
分类号:
R318
DOI:
DOI:10.3969/j.issn.1005-202X.2023.10.006
文献标志码:
A
摘要:
目的:研究在MRI检查过程中金属医疗植入物引起的机体吸收比(SAR)变化导致的局部升温效应。方法:以数字人影像数据集为基础,通过数据分割和后处理构建了身体上半身半精细化几何模型。最后将几何模型导入到COMSOL中,并搭建3T磁共振线圈,设定工作频率(128 MHz),分析金属医疗植入物对人体组织和植入介质的SAR与温度变化。结果:通过对比不同组织情况下金属医疗植入物植入前后的变化情况发现,金属植入物植入固定后的SAR与温度都是未植入前的3倍,且主要集中在金属医疗植入物区域。结论:在MRI检查中,金属植入物会造成机体中植入物附近SAR局部升高,从而在植入物周围出现升温效应,长时间扫描会对机体产生一定的损伤。
Abstract:
Abstract: Objective To analyze the local temperature rise caused by changes in the specific absorption ratio (SAR) of human body due to metal implant during magnetic resonance imaging. Methods On the basis of the digital human image dataset, a semi-refined geometric model of the upper part of human body was constructed through data segmentation and post-processing. The geometric model was imported into COMSOL, and a 3T magnetic resonance coil was built and the operating frequency was set at 128 MHz for analyzing the effect of metal implant on SAR and temperature changes. Results Through the comparison of the changes in SAR and temperature of different tissues before and after implantation, it was found that after implantation, SAR and temperature were 3 times higher than those before implantation, and that the changes mainly occurred around the metal implant. Conclusion In magnetic resonance imaging, metal implant can cause local rise of SAR near the implant in human body, which results in temperature rise around the implant, suggesting that long-term scanning will cause certain damages to human body.

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备注/Memo

备注/Memo:
【收稿日期】2023-07-10 【基金项目】四川省医学会(恒瑞)科研基金专项课题(2021HR46);四川省医学会伤口疾病(泰阁)科研基金专项课题(2021TG23, 2021TG29);成都医学院四川应用心理学研究中心资助项目(CSXL-23305) 【作者简介】常继辉,副主任医师,研究方向:骨伤,E-mail: 526008070@qq.com
更新日期/Last Update: 2023-10-27