| Autor: |
Hu G; Department of Biomedical Engineering, University of Minnesota, Minnesota 55455, USA., Li X, He B |
| Jazyk: |
angličtina |
| Zdroj: |
Applied physics letters [Appl Phys Lett] 2010 Sep 06; Vol. 97 (10). Date of Electronic Publication: 2010 Sep 10. |
| DOI: |
10.1063/1.3486685 |
| Abstrakt: |
Magnetoacoustic tomography with magnetic induction (MAT-MI) is a recently introduced imaging modality for noninvasive electrical impedance imaging, with ultrasound imaging resolution and a contrast reflecting the electrical conductivity properties of tissues. However, previous MAT-MI systems can only image samples that are much more conductive than real human or animal tissues. To image real biological tissue samples, a large-current-carrying coil that can give stronger magnetic stimulations and stronger MAT-MI acoustic signals is employed in this study. The conductivity values of all the tissue samples employed in this study are also directly measured using a well calibrated four-electrode system. The experimental results demonstrated the feasibility to image biological tissues with electrical conductivity contrast below 1.0 S∕m using the MAT-MI technique with safe level of electromagnetic energy applied to tissue samples. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
