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dc.contributor.authorSalchak, Yana A
dc.contributor.authorEspinosa, Hugo G
dc.contributor.authorThiel, David V
dc.date.accessioned2019-07-11T03:03:20Z
dc.date.available2019-07-11T03:03:20Z
dc.date.issued2020
dc.identifier.issn0018-9294
dc.identifier.doi10.1109/tbme.2019.2916632
dc.identifier.urihttp://hdl.handle.net/10072/385845
dc.description.abstractThe precise location of an ingested radio transmitter/sensor is of importance in gastroenterology studies. Given the complex geometry of the gut and the very large variations in human size and electromagnetic characteristics, inverse modelling from surface based measurements is very complex and a unique location solution is not possible. This paper proposes a simple method based on far-field approximation of the attenuated field from the ingested transmitter. The validation experiments for an ellipsoid cylinder using averaged electromagnetic properties of the human GI tract (conductivity 0.87 S/m, relative permittivity 62) and a Hertzian dipole radiator inside the body with a frequency of 433 MHz were conducted assuming a receiver dynamic range of less than 100 dB. The reliability of the method was verified by comparison with FDTD modelling. The method provides an analytical solution to estimate the surface field intensity depending on the dipole location and orientation with a negligible computational cost. This efficient algorithm can be incorporated into an inversion algorithm for localization of wireless endoscopy sensors to allow precise targeted treatment.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto1
dc.relation.ispartofjournalIEEE Transactions on Biomedical Engineering
dc.subject.fieldofresearchArtificial intelligence
dc.subject.fieldofresearchBiomedical engineering
dc.subject.fieldofresearchElectronics, sensors and digital hardware
dc.subject.fieldofresearchComputer vision and multimedia computation
dc.subject.fieldofresearchcode4602
dc.subject.fieldofresearchcode4003
dc.subject.fieldofresearchcode4009
dc.subject.fieldofresearchcode4603
dc.titleModelling the Surface Field from an Ingested Radio Transmitter with an Approximate Attenuation Model for Gastroenterology Investigations
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorThiel, David V.
gro.griffith.authorEspinosa, Hugo G.


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