前列腺癌磁共振电阻抗成像新方法

doi:10.3969/j.issn.0258-8021.2015. 04.016

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摘要基于经肠道和尿道的体内电极方式，提出适用于人体深层、小体积前列腺癌诊断的磁共振电阻抗成像（MREEIT）新方法, 并通过仿真将该方法的成像结果与传统的体外电极MREIT方法进行对比。分别采用有限元方法及J-substitution算法，求解三维正问题和逆问题。仿真结果表明：在噪声存在的情况下，经肠道和尿道两种体内电极MREIT的成像效果均远优于体外电极方式；且在相同的噪声水平下，经尿道MREIT方式的成像效果更好。信噪比（SNR）为30且采用最佳电极配置方式时，经尿道和肠道体内电极MREIT得到的重构电导率与目标电导率之间的相对误差（RE）分别为10.32%和14.58%。研究提示，体内电极MREIT在前列腺癌诊断领域具有潜在应用价值。

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	刘阳¹郭建炎^2*

关键词 ：前列腺癌, 磁共振, 电阻抗成像, J-substitution算法

Key words： prostate cancer magnetic resonance electrical impedance tomography J-substitution algorithm

基金资助:福建省自然科学基金（2013J05102）

引用本文:

刘阳¹郭建炎^2*. 前列腺癌磁共振电阻抗成像新方法[J]. 中国生物医学工程学报, 2015, 34(4): 496-500.
Liu Yang¹Guo Jianyan^2*. A Novel Method of Magnetic Resonance Electrical Impedance Tomography for Prostate Cancer Detection. journal1, 2015, 34(4): 496-500.

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http://cjbme.csbme.org/CN/10.3969/j.issn.0258-8021.2015. 04.016 或 http://cjbme.csbme.org/CN/Y2015/V34/I4/496

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