A controllably anisotropic conductivity or diffusion phantom constructed from isotropic layers.

A controllably anisotropic conductivity or diffusion phantom constructed from isotropic layers.
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DOI:
10.1007/s10439-009-9799-6
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发表时间:
2009-12
影响因子:
3.8
通讯作者:
Tucker, Aaron
Tucker, Aaron
中科院分区:
工程技术2区
文献类型:
--
作者:
Sadleir, Rosalind J.;Neralwala, Farida;Te, Tang;Tucker, Aaron

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需要具有可控和良好定义的各向异性的晶体管来测试用于成像电各向异性的方法。我们开发并测试了一种具有类似于均匀各向异性导电介质特性的体模。体模由具有不同电导率的各向同性凝胶的交替切片构成。通过改变两种凝胶的相对电导率,可以很容易地改变体模中的各向异性程度。我们测试了几个幻影的稳定性,发现它们的性能保持约8小时后建设。该体模可应用于电阻抗断层扫描、磁共振电阻抗断层扫描、EEG和ECG源成像以及扩散张量成像。
Phantoms with controllable and well-defined anisotropy are needed to test methods for imaging electrical anisotropy. We developed and tested a phantom that had properties similar to a homogeneous anisotropic conductive medium. The phantom was constructed with alternate slices of isotropic gel having different conductivities. The degree of anisotropy in the phantom could be varied easily by changing the relative conductivity of the two gels. We tested the stability of several phantoms and found their properties were maintained for approximately 8 h following construction. The phantom has application to electrical impedance tomography, magnetic resonance electrical impedance tomography, EEG and ECG source imaging and diffusion tensor imaging.
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