10 June 2002 Internal temperature mapping of biological objects by an acoustical brightness thermometer with focused antenna
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Proceedings Volume 4618, Biomedical Optoacoustics III; (2002) https://doi.org/10.1117/12.469865
Event: International Symposium on Biomedical Optics, 2002, San Jose, CA, United States
Abstract
Mapping of internal temperature field in biological tissues is one of the urgent problems of modern medical diagnostics. One of the possible ways of obtaining internal temperature distribution is in application of focused antennae with large aperture and small focal waist in acoustical brightness thermometers (ABT). This work presents the developed ABT with focused antennas well as the results of experimental investigation of localization of heated sources by spatial scanning of focused antenna for two different regimes of signal receiving - compensation and correlation ones. Besides that the receiving antenna field for these regimes was investigated experimentally. The phantom in the form of polystyrene tube filled with heated oil and placed in water was used as a source in the experiments on object localization. 2D scanning was carried out by displacement of receiving antenna long principal axis. Maximum value of ABT output signal was observed when phantom was positioned in antenna focus. No solving of inverse problem is required to obtain tomographic image, thus improving efficiency and reliability of object localization. This work was supported by Russian Foundation for Basic Research and 6th competition-expertise of young scientists of Russian Academy of Sciences.
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Eugene V. Krotov, Alexander M. Reyman, Vladimir A. Vilkov, Anatoly D. Mansfeld, "Internal temperature mapping of biological objects by an acoustical brightness thermometer with focused antenna", Proc. SPIE 4618, Biomedical Optoacoustics III, (10 June 2002); doi: 10.1117/12.469865; https://doi.org/10.1117/12.469865
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