Ogunlade, O;
Beard, P;
(2015)
Exogenous contrast agents for thermoacoustic imaging: an investigation into the underlying sources of contrast.
Med Phys
, 42
(1)
pp. 170-180.
10.1118/1.4903277.
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Abstract
Thermoacoustic imaging at microwave excitation frequencies is limited by the low differential contrast exhibited by high water content tissues. To overcome this, exogenous thermoacoustic contrast agents based on gadolinium compounds, iron oxide, and single wall carbon nanotubes have previously been suggested and investigated. However, these previous studies did not fully characterize the electric, magnetic, and thermodynamic properties of these agents thus precluding identification of the underlying sources of contrast. To address this, measurements of the complex permittivity, complex permeability, DC conductivity, and Grüneisen parameter have been made. These measurements allowed the origins of the contrast provided by each substance to be identified.
| Type: | Article |
|---|---|
| Title: | Exogenous contrast agents for thermoacoustic imaging: an investigation into the underlying sources of contrast. |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1118/1.4903277 |
| Publisher version: | http://dx.doi.org/10.1118/1.4903277 |
| Language: | English |
| Additional information: | © 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. |
| Keywords: | Acoustics, Contrast Media, Ferric Compounds, Gadolinium, Microwaves, Molecular Imaging, Nanotubes, Carbon, Permeability, Sodium Chloride, Sucrose |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1471315 |
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