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Tissue temperature estimation with pulse-echo in blood flow presence

2013-12-01Conference object Restricted access
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dc.contributor.authorRuano, M. Graça
dc.contributor.authorDuarte, H. Simões
dc.contributor.authorTeixeira, C. A.
dc.date.accessioned2015-04-13T14:53:39Z
dc.date.available2015-04-13T14:53:39Z
dc.date.issued2013-12-01
dc.description.abstractAiming at time-spatial characterization of tissue temperature when ultrasound is applied for thermal therapeutic proposes two experiments were developed considering gel-based phantoms, one of them including an artificial blood vessel. The blood vessel was mimicking blood flow in a common carotid artery. For each experiment phantoms were heated by a therapeutic ultrasound (TU) device emitting different intensities (0.5, 1, 1.5, 1.8 W/cm2). Temperature was monitored by thermocouples and estimated through imaging ultrasound transducer's signals within specific special points inside the phantom. The temperature estimation procedure was based on temporal echo-shifts (TES), computed based on echo-shifts collected through image ultrasound (IU) transducer. Results show that TES is a reliable non-invasive method of temperature estimation, regardless the TU intensities applied. Presence of a pulsatile blood flow vessel in the focal point of TU transducer reduces thermal variation in more than 50%, also affecting the temperature variation in the surrounding area. In other words, vascularized tissues require longer ultrasound thermal therapeutic sessions or higher TU intensities and inclusion of IU in the therapeutic procedure enables non-invasive monitoring of temperature. © 2013 IEEE.
dc.description.sponsorshipIEEE, IEEE Instrumentat Measurement Soc, IEEE Hungary Sect
dc.identifier.doihttp://dx.doi.org/10.1109/WISP.2013.6657477
dc.identifier.isbn978-1-4673-4544-6; 978-1-4673-4543-9
dc.identifier.otherAUT: MRU00118;
dc.identifier.urihttp://hdl.handle.net/10400.1/5893
dc.language.isoeng
dc.peerreviewedyes
dc.publisherIEEE
dc.subjectNoninvasive temperature estimation
dc.subjectTemporal echo-shifts
dc.subjectTherapy
dc.subjectUltrasound imaging
dc.subject.otherNoninvasive estimation
dc.subject.otherUltrasound
dc.titleTissue temperature estimation with pulse-echo in blood flow presence
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceFunchal, Portugal
oaire.citation.endPage31
oaire.citation.startPage27
oaire.citation.title2013 IEEE 8th International Symposium on Intelligent Signal Processing, WISP 2013 - Proceedings
oaire.citation.title8th IEEE International Symposium on Intelligent Signal Processing (WISP)
person.familyNameRuano
person.familyNameTeixeira
person.givenNameMaria
person.givenNameCésar
person.identifier.ciencia-id9811-A0DD-D5A5
person.identifier.orcid0000-0002-0014-9257
person.identifier.orcid0000-0001-9396-1211
person.identifier.ridA-8321-2011
person.identifier.ridA-3477-2012
person.identifier.scopus-author-id7004483805
person.identifier.scopus-author-id55826531700
rcaap.rightsrestrictedAccess
rcaap.typeconferenceObject
relation.isAuthorOfPublication61fc8492-d73f-46ca-a3a3-4cd762a784e6
relation.isAuthorOfPublication29e9844d-9355-4f2a-badf-9e7ad3117cdb
relation.isAuthorOfPublication.latestForDiscovery61fc8492-d73f-46ca-a3a3-4cd762a784e6

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