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| Content Provider | PubMed Central |
|---|---|
| Author | Lee, Joonsung Song, Yizhuang Choi, Narae Cho, Sungmin Seo, Jin Keun Kim, Dong-hyun |
| Copyright Year | 2013 |
| Abstract | Anisotropic electrical properties can be found in biological tissuessuch as muscles and nerves. Conductivity tensor is a simplified model toexpress the effective electrical anisotropic information and depends on the imagingresolution. The determination of the conductivity tensor should be based on Ohm's law. In other words, the measurement of partial information of currentdensity and the electric fields should be made. Since the direct measurements ofthe electric field and the current density are difficult, we use MRI to measure theirpartial information such as B1 map; it measures circulating current density andcirculating electric field. In this work, the ratio of the two circulating fields, termedcirculating admittivity, is proposed as measures of the conductivity anisotropy atLarmor frequency. Given eigenvectors of the conductivity tensor, quantitativemeasurement of the eigenvalues can be achieved from circulating admittivity forspecial tissue models. Without eigenvectors, qualitative information of anisotropystill can be acquired from circulating admittivity. The limitation of the circulatingadmittivity is that at least two components of the magnetic fields should bemeasured to capture anisotropic information. |
| Related Links | http://dx.doi.org/10.1155/2013/421619 |
| Starting Page | 421619 |
| File Format | |
| ISSN | 1748670X |
| e-ISSN | 17486718 |
| Journal | Computational and Mathematical Methods in Medicine |
| Volume Number | 2013 |
| Language | English |
| Publisher | Hindawi Publishing Corporation |
| Publisher Date | 2013-01-01 |
| Access Restriction | Open |
| Rights Holder | Hindawi Publishing Corporation |
| Subject Keyword | Biochemistry, Genetics and Molecular Biology(all) Modelling and Simulation Immunology and Microbiology(all) Applied Mathematics Medicine(all) Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Immunology and Microbiology Medicine Biochemistry, Genetics and Molecular Biology Modeling and Simulation |
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