Wireless control of induced radiofrequency currents in active implantable medical devices during MRI

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buir.contributor.authorSilemek, Berk
buir.contributor.authorAtalar, Ergin
dc.citation.epage2381en_US
dc.citation.issueNumber6en_US
dc.citation.spage2370en_US
dc.citation.volumeNumber83en_US
dc.contributor.authorAçıkel, V.en_US
dc.contributor.authorSilemek, Berken_US
dc.contributor.authorAtalar, Erginen_US
dc.date.accessioned2020-02-11T10:51:54Z
dc.date.available2020-02-11T10:51:54Z
dc.date.issued2020
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentNational Magnetic Resonance Research Center (UMRAM)en_US
dc.description.abstractPurpose To introduce a prototype active implantable medical device (AIMD) for which the induced radiofrequency currents can be controlled wirelessly. Methods The modified transmission line method is used to formulate how the lead‐case impedance of an AIMD affects the temperature rise around the electrode. A prototype AIMD is designed with the aim of controlling the unwanted temperature rise around its electrode during an MRI examination by altering the impedance between the lead and the case of the implant. MRI experiments were conducted with this prototype implant, which also has a built‐in temperature sensor at its electrode. During the experiment, the implant’s lead‐case impedance was controlled using Bluetooth communication with a remote computer, and the lead tip temperature was recorded. Results Ten different lead‐case impedance values and their corresponding tip temperature rises were examined during MRI experiments. The experimental results confirmed that the tip temperature rise can be controlled by varying the lead‐case impedance wirelessly. Conclusion The feedback from the temperature at the AIMD tip, together with variable lead‐case impedance, enables control of the safety profile of the AIMD during an MRI examination.en_US
dc.description.provenanceSubmitted by Onur Emek (onur.emek@bilkent.edu.tr) on 2020-02-11T10:51:54Z No. of bitstreams: 1 Bilkent-research-paper.pdf: 268963 bytes, checksum: ad2e3a30c8172b573b9662390ed2d3cf (MD5)en
dc.description.provenanceMade available in DSpace on 2020-02-11T10:51:54Z (GMT). No. of bitstreams: 1 Bilkent-research-paper.pdf: 268963 bytes, checksum: ad2e3a30c8172b573b9662390ed2d3cf (MD5) Previous issue date: 2019en
dc.embargo.release2021-06-01
dc.identifier.doi10.1002/mrm.28089en_US
dc.identifier.issn0740-3194
dc.identifier.urihttp://hdl.handle.net/11693/53264
dc.language.isoEnglishen_US
dc.publisherInternational Society for Magnetic Resonance in Medicineen_US
dc.relation.isversionofhttps://doi.org/10.1002/mrm.28089en_US
dc.source.titleMagnetic Resonance in Medicineen_US
dc.subjectActive implantable medical devicesen_US
dc.subjectBluetoothen_US
dc.subjectHeating reductionen_US
dc.subjectMoTLiMen_US
dc.subjectMR heatingen_US
dc.subjectRF safetyen_US
dc.titleWireless control of induced radiofrequency currents in active implantable medical devices during MRIen_US
dc.typeArticleen_US

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