Show simple item record

dc.contributor.authorNadimi, Esmaeil S
dc.contributor.authorBlanes-Vidal, Victoria
dc.contributor.authorHarslund, Jakob LF
dc.contributor.authorRamezani, Mohammad H
dc.contributor.authorKjeldsen, Jens
dc.contributor.authorJohansen, Per Michael
dc.contributor.authorThiel, David
dc.contributor.authorTarokh, Vahid
dc.date.accessioned2018-01-03T23:49:05Z
dc.date.available2018-01-03T23:49:05Z
dc.date.issued2015
dc.identifier.issn2053-3713
dc.identifier.doi10.1049/htl.2015.0024
dc.identifier.urihttp://hdl.handle.net/10072/141961
dc.description.abstractRadio frequency tracking of medical micro-robots in minimally invasive medicine is usually investigated upon the assumption that the human body is a homogeneous propagation medium. In this Letter, the authors conducted various trial programs to measure and model the effective complex permittivity ε in terms of refraction ε′, absorption ε″ and their variations in gastrointestinal (GI) tract organs (i.e. oesophagus, stomach, small intestine and large intestine) and the porcine abdominal wall under in vivo and in situ conditions. They further investigated the effects of irregular and unsynchronised contractions and simulated peristaltic movements of the GI tract organs inside the abdominal cavity and in the presence of the abdominal wall on the measurements and variations of ε′ and ε′′. They advanced the previous models of effective complex permittivity of a multilayer inhomogeneous medium, by estimating an analytical model that accounts for reflections between the layers and calculates the attenuation that the wave encounters as it traverses the GI tract and the abdominal wall. They observed that deviation from the specified nominal layer thicknesses due to non-geometric boundaries of GI tract morphometric variables has an impact on the performance of the authors’ model. Therefore, they derived statistical-based models for ε′ and ε′′ using their experimental measurements.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherInstitution of Engineering and Technology
dc.relation.ispartofpagefrom135
dc.relation.ispartofpageto140
dc.relation.ispartofissue6
dc.relation.ispartofjournalHealthcare Technology Letters
dc.relation.ispartofvolume2
dc.subject.fieldofresearchMicrotechnology
dc.subject.fieldofresearchcode091009
dc.titleIn vivo and in situ measurement and modelling of intra-body effective complex permittivity
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorThiel, David V.


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record