面向乳腺癌便携式磁共振检测单边永磁体的研制  

Development of a portable unilateral permanent magnet for breast cancer nuclear magnetic resonance detection

作　　者：张金翔 宋子杰 陆荣生[1,2] 倪中华 Zhang Jinxiang;Song Zijie;Lu Rongsheng;Ni Zhonghua(School of Mechanical Engineering,Southeast University,Jiangsu Nanjing,211189,China;Jiangsu Key Laboratory for Design and Manufacture of Micro-NanoBiomedical Instruments, Southeast University,Jiangsu Nanjing, 211189,China)

机构地区：[1]东南大学机械工程学院,江苏南京211189 [2]江苏省微纳生物医疗器械设计与制造重点实验室,江苏南京211189

出　　处：《机械设计与制造工程》2022年第6期25-31,共7页Machine Design and Manufacturing Engineering

基　　金：国家自然科学基金资助项目(52075098);国家重大科学仪器专项(51627808)。

摘　　要：为了普及乳腺磁共振成像筛查,提出一种可用于磁共振成像的单边永磁体结构,磁体质量仅10.9 kg。该磁体具有半径为5.5 cm的半球形目标区域,足以容纳单个乳腺检测。目标区域内的磁场强度最小值为50.4 mT,梯度为1.35 T/m。制作装配后的磁体测试结果表明,实测磁场符合仿真结果。The incidence rate of breast cancer is increasing year by year,which seriously threatens the health and life of women all over the world.Nuclear magnetic resonance imaging has been widely used in breast cancer screening and detection because of its advantages of noninvasive,radiation-free and high sensitivity.In order to popularize breast magnetic resonance imaging screening,a unilateral permanent magnet which can be used for magnetic resonance imaging is proposed in this paper.The magnet mass is only 10.9 kg.The magnet has a hemispherical target area with a radius of 5.5 cm,which is enough to accommodate a single breast detection.The minimum magnetic field intensity in the target area is 50.4 mT and the gradient is 1.35 T/m.The test results of the assembled magnet show that the measured magnetic field is in line with the simulation results.

关 键 词：核磁共振 单边永磁体 乳腺癌 

分 类 号：O482.53[理学—固体物理]