| 磁声成像方法的研究进展 |
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| 引用本文： | 江凌彤,刘国强,王浩,张洋,李士强.磁声成像方法的研究进展[J].国际生物医学工程杂志,2009,32(2):113-116. |
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| 作者姓名： | 江凌彤 刘国强 王浩 张洋 李士强 |
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| 作者单位： | 中国科学院电工研究所前沿部中国科学院研究生院,北京,100190 |
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| 摘 要： | 磁声成像技术（MAT）是电阻抗成像与超声成像相结合的一种方法。感应式磁声成像方法是将被测样本置于静磁场和交变磁场中，交变磁场在样本中产生涡流，涡流受到洛仑兹力作用而激发出超声波，通过检测超声信号重建电阻抗的分布。应用感应式磁声成像方法可以获得较高分辨率的图像和灵敏度，对临床辅助诊断具有重要意义。并在此基础上提出了无需旋转静磁场的感应式磁声成像方法。
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| 关 键 词： | 电阻抗成像 磁声成像 感应式磁声成像 超声信号 |
Development of magnetoacoustic tomography |
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| Institution: | JIANG Ling-tong,LIU Guo-qiang, WANG Hao,et al.(Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China) |
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| Abstract: | Magnetoaconstic tomography(MAT)is the combination of electrical impedance tomography(EIT)and ultrasonic imaging.In detection using magnetoacoustic tomography with magnetic induction(MAT-MI),sample is located in the area where both static magnetic field and a time-varying magnetic field exist.The time-racing magnetic field induces an eddy current in the sample and the sample will emit ultrasonic waves by Lorentz force.The ultrasonic signals are collected to reconstruct images related to the electrical impedance distribution.This method prorides images with higher resolution and higher sensitivity which are valuable in clinical diagnoses.Based on the MAT-MI,the application of MAT-MI with no rotation of the static magnetic field is proposed. |
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| Keywords: | Electrical impedance tomography Magnetoacoustic tomography Magnetoacoustic tomography with nagnetic induction Ultrasonic signals |
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