DocumentCode :
2697470
Title :
Interpretation of radiometric signal for tumor detection
Author :
Riipulk, Jevgeni ; Hinrikus, Hiie
Author_Institution :
Biomed. Eng. Centre, Tallinn Tech. Univ., Estonia
Volume :
6
fYear :
1997
fDate :
30 Oct-2 Nov 1997
Firstpage :
2509
Abstract :
Method for interpretation of radiometrically measured microwave signal by numerical simulation of radiometric signal generation inside multi-layered breast tissues has been developed using FDTD method. A radiometric system for exploration of breast tumors based on a Dicke radiometer with two body-contacting waveguide antennas has been designed. Special software for presentation of data about configuration of the breast under investigation, the measurement point position on it, level and co-ordinate of the radiometric signal provides possibility for the interpretation of radiometric signal for tumor detection by comparison of calculated and measured signal field distributions. The results of calculations showed that Dicke radiometer having temperature resolution better than 1 K can be used with two dielectric-filled body-contacting waveguide antennas for exploration of tumors which are at least 6 mm in diameter. The preliminary clinical measurements show, that the radiometric system is working better in the case of small sizes of anomalies
Keywords :
biomedical equipment; biomedical measurement; biothermics; dielectric-loaded waveguides; finite difference time-domain analysis; mammography; medical image processing; microwave imaging; microwave measurement; radiometers; radiometry; temperature distribution; tumours; waveguide antennas; 2D imaging; Dicke radiometer; FDTD method; body-contacting waveguide antennas; breast temperature differences; breast tumors; data presentation software; dielectric-filled waveguide antennas; inverse electrodynamics problem; microwave radiometry; multilayered breast tissues; numerical simulation; radiometric signal generation; radiometrically measured microwave signal; signal field distributions; signal interpretation method; tumor detection; Antenna measurements; Dielectric measurements; Microwave measurements; Microwave radiometry; Microwave theory and techniques; Numerical simulation; Position measurement; Signal detection; Software measurement; Tumors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
ISSN :
1094-687X
Print_ISBN :
0-7803-4262-3
Type :
conf
DOI :
10.1109/IEMBS.1997.756838
Filename :
756838
Link To Document :
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