Resonance-Based Techniques for Microwave Breast Cancer Applications

dc.contributor.authorHong, Sunen
dc.contributor.committeechairDavis, William A.en
dc.contributor.committeememberStutzman, Warren L.en
dc.contributor.committeememberSafaai-Jazi, Ahmaden
dc.contributor.committeememberPratt, Timothy J.en
dc.contributor.committeememberAdjerid, Slimaneen
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2014-03-14T20:16:46Zen
dc.date.adate2012-10-30en
dc.date.available2014-03-14T20:16:46Zen
dc.date.issued2012-09-12en
dc.date.rdate2012-10-30en
dc.date.sdate2012-09-25en
dc.description.abstractIt is well known that a finite-size scatterer has a set of natural resonances, which are uniquely determined by the physical properties of the scatterer. This is also the case for a breast tumor which can be regarded as a dielectric scatterer. Since the scatterer is naturally "tuned" at the resonances, it is expected that an increased electromagnetic coupling would take place at the resonance frequencies compared to other frequencies. For a breast tumor, this would mean a higher power absorption, indicating a faster temperature increase resulting in more efficient hyperthermia. In this dissertation, an adaptive microwave concept is demonstrated for breast cancer applications. The general approach is to detect and identify the tumor-specific resonance, determine the electrical location of the tumor, and apply the focused microwave hyperthermia using the identified resonance and the electrical location. The natural resonances vary depending on the tumor size, shape, and breast tissue configuration. Therefore, an adaptive tuning of the microwave source to tumor-specific resonance frequencies could improve the overall efficiency of hyperthermia treatment by allowing for a faster and more effective heating to achieve a desired therapeutic temperature level. Applying the singularity expansion method (SEM), both the resonances and the electrical location can be obtained from the poles and residues, respectively. This SEM-based approach is computationally inexpensive and can easily be implemented as a combination processing into emerging UWB microwave systems. Alternatively, a relatively simple microwave system based on this concept can potentially be used in conjunction with existing mammography.en
dc.description.degreePh. D.en
dc.identifier.otheretd-09252012-132326en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09252012-132326/en
dc.identifier.urihttp://hdl.handle.net/10919/29096en
dc.publisherVirginia Techen
dc.relation.haspartHong_SK_D_2012.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectnatural resonanceen
dc.subjectbreast canceren
dc.subjectmicrowave hyperthermiaen
dc.subjectresidueen
dc.subjectsingularity expansion methoden
dc.subjectpoleen
dc.subjectground penetrating radaren
dc.titleResonance-Based Techniques for Microwave Breast Cancer Applicationsen
dc.typeDissertationen
thesis.degree.disciplineElectrical and Computer Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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