Optimization of Dual Slot Antenna using Floating Metallic Sleeve for Microwave Ablation

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dc.contributor.authorNwoye, E. O.
dc.contributor.authorIbitoye, Z. A.
dc.contributor.authorAweda, M. A.
dc.contributor.authorOremosun, A. A.
dc.contributor.authorAnnunobI, C. C.
dc.contributor.authorAkanmu, O. N.
dc.date.accessioned2019-09-26T10:49:06Z
dc.date.available2019-09-26T10:49:06Z
dc.date.issued2015-01-01
dc.descriptionStaff publicationen_US
dc.description.abstractBackward heating reduction is vital in power distribution optimization in microwave thermal ablation. In this study, we optimized dual slot antenna to yield reduction in backward heating pattern along the antenna shaft with the application of floating metallic sleeve. Finite element methods were used to generate the electromagnetic (EM) field and thermal distribution in liver tissue. The position of the sleeve from the tipoff the probe (z=0mm) was varied within the range 14≤z≤22mm while sleeve lengh;;t was varied within 16≤z≤48mm interval using operating frequency of 2.45GHz. the best optimized design has reflection coefficient of -20.87 dB and axial ratio of 0.41 when the sleeve position was at 17mmand sleeve length was 18mm. experimental validation shows that inclusion of floating metallic sleeve on dual slot antenna for hepatic microwave ablation averagely increased ablation diameter and aspect ratio by 17.8% and 33.9% respectively and decreased ablation length by 11.2%.Reduction in backward heating and increase in power deposition into liver tissue could be achieved by sing this antenna to provide greater efficiency and localization of specific absorption rate in delivering microwave energy for hepatic ablationen_US
dc.identifier.citationNwoye, E.O., [Et...al] (2015). Optimization of Dual Slot Antenna using Floating Metallic Sleeve for Microwave Ablation. Elsevier Journal of Medical Engineering and Physics, Vol.37, 384-391PP.en_US
dc.identifier.issn1350-4533
dc.identifier.urihttps://ir.unilag.edu.ng/handle/123456789/6147
dc.language.isoenen_US
dc.publisherElsevier Journal of Medical Engineering and Physicsen_US
dc.relation.ispartofseriesElsevier Journal of Medical Engineering and Physics;Vol.37
dc.subjectAxial ratioen_US
dc.subjectCanceren_US
dc.subjectDual sloten_US
dc.subjectFinite element methoden_US
dc.subjectMetallic sleeveen_US
dc.subjectMicrowave ablationen_US
dc.subjectReflection coefficienten_US
dc.subjectResearch Subject Categories::TECHNOLOGY::Bioengineeringen_US
dc.titleOptimization of Dual Slot Antenna using Floating Metallic Sleeve for Microwave Ablationen_US
dc.typeArticleen_US
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