Application-Specific Broadband Antennas for Microwave Medical Imaging

182 Pages·2017·11.42 MB·English

by  Malyhe Jalilvand

Karlsruher Forschungsberichte aus dem Band
Institut für Hochfrequenztechnik und Elektronik
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Malyhe Jalilvand
Application-Specific Broadband Antennas
for Microwave Medical Imaging
Karlsruher Forschungsberichte
aus dem Institut für Hochfrequenztechnik und Elektronik
Herausgeber: Prof. Dr.-Ing. Thomas Zwick
Band 85
Eine Übersicht aller bisher in dieser Schriftenreihe erschienenen Bände
finden Sie am Ende des Buches.
Application-Specific Broadband Antennas
for Microwave Medical Imaging
by
Malyhe Jalilvand
Dissertation, Karlsruher Institut für Technologie
KIT-Fakultät für Elektrotechnik und Informationstechnik
Tag der mündlichen Prüfung: 17. Oktober 2016
Referenten: Prof. Dr.-Ing. Thomas Zwick
Prof. Dr. rer. nat. Olaf Dössel
Impressum
Karlsruher Institut für Technologie (KIT)
KIT Scientific Publishing
Straße am Forum 2
D-76131 Karlsruhe
KIT Scientific Publishing is a registered trademark
of Karlsruhe Institute of Technology.
Reprint using the book cover is not allowed.
www.ksp.kit.edu
This document – excluding the cover, pictures and graphs – is licensed
under a Creative Commons Attribution-Share Alike 4.0 International License
(CC BY-SA 4.0): https://creativecommons.org/licenses/by-sa/4.0/deed.en
The cover page is licensed under a Creative Commons
Attribution-No Derivatives 4.0 International License (CC BY-ND 4.0):
https://creativecommons.org/licenses/by-nd/4.0/deed.en
Print on Demand 2017 – Gedruckt auf FSC-zertifiziertem Papier
ISSN 1868-4696
ISBN 978-3-7315-0664-5
DOI 10.5445/KSP/1000069288

Editor’s Preface
Medicaldiagnosticsbymeansofmicrowavesisagrowingresearchfieldworld-
widesincenearly20years.Although,suchsystemsareunlikelytoachievethe
highperformanceoftheexistingtechnologiessuchasmagneticresonanceima-
ging(MRI),computedtomography(CT)andultrasoundingeneral,theimaging
systemsbasedonelectromagneticwavescanbeanattractiveextensiontothese
existingsystems.Foronething,thenewsystemscouldbesignificantlycheaper
andmoreportablethanMRIandCT,foranotherthing,theyhaveanadvantage
over ultrasound as they can âseeâ through bones. A very interesting applicati-
on could therefore be the identification and classification of stroke. First, the
skull/cranialbonespreventthesuccessfuluseofultrasoundandsecond,avery
quickoutpatientdistinctionbetweenischemicandhemorrhagicstrokeiscrucial
forsuccessfultreatment.
Sincemicrowave-baseddiagnosticsystemscouldeasilybeimplementedascom-
pactandportablesystems,thisappearstobeoneofthemostattractiveareasof
applicationofthenewtechnology.However,thereisaproblemcommontoall
microwavemedicaldiagnosticapplications:therelativelyhighsignalattenuati-
on in the tissues and the reflection of the waves from the surface of the body.
Animportantapproachtosolvingthisproblemistoplacetheantennasdirectly
onthebodytoavoidthehighreflectionattheinterfacebetweenairandtissue.
Atthesametime,thismethodpromisesreducedantennasize,whichisessential
for imaging systems, where a maximum number of systems, i.e. antennas are
beneficial.Furthermore,theantennasareanultimatepartoftheimagingsystem
andthereforehaveahugeimpactontheresultingimagequality.
Editor’spreface
Inherwork,Ms.Jalilvandprovidedimportantscientificfundamentalstospeci-
fic antennas for medical microwave diagnostics. Her focus was on developing
antennas which provide optimal performance in particular applications and in
finding criteria to evaluate the performance of such antennas in the target app-
lications. The work of Ms. Jalilvand thus represents an important contribution
tothestateoftheart.Iexpectthatherideasandantennaswillhelpresearchers
worldwide to come forward with their research on microwave based medical
diagnostics. For Ms. Jalilvand, with her very good technical skills, I wish her
successinherfuturecareer.
Prof.Dr.-Ing.ThomasZwick-InstituteDirector